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version 1.1, 2012/02/21 16:32:16	version 1.1.1.4, 2013/10/14 07:54:04
Line 1	Line 1
.ig	.ig
Copyright (C) 2002-10 Bruce Allen <smartmontools-support@lists.sourceforge.net>	Copyright (C) 2002-10 Bruce Allen <smartmontools-support@lists.sourceforge.net>
	Copyright (C) 2004-13 Christian Franke <smartmontools-support@lists.sourceforge.net>

$Id$	$Id$

This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

You should have received a copy of the GNU General Public License (for
example COPYING); if not, write to the Free Software Foundation, Inc., 675
Mass Ave, Cambridge, MA 02139, USA.

This code was originally developed as a Senior Thesis by Michael Cornwell	This program is free software; you can redistribute it and/or modify
at the Concurrent Systems Laboratory (now part of the Storage Systems	it under the terms of the GNU General Public License as published by
Research Center), Jack Baskin School of Engineering, University of	the Free Software Foundation; either version 2, or (at your option)
California, Santa Cruz. http://ssrc.soe.ucsc.edu/	any later version.

	You should have received a copy of the GNU General Public License
	(for example COPYING); If not, see <http://www.gnu.org/licenses/>.

	This code was originally developed as a Senior Thesis by Michael Cornwell
	at the Concurrent Systems Laboratory (now part of the Storage Systems
	Research Center), Jack Baskin School of Engineering, University of
	California, Santa Cruz. http://ssrc.soe.ucsc.edu/

..	..
.TH SMARTCTL 8 CURRENT_SVN_DATE CURRENT_SVN_VERSION CURRENT_SVN_DATE	.TH SMARTCTL 8 CURRENT_SVN_DATE CURRENT_SVN_VERSION CURRENT_SVN_DATE
.SH NAME	.SH NAME
Line 39 CURRENT_SVN_VERSION CURRENT_SVN_DATE CURRENT_SVN_REV	Line 39 CURRENT_SVN_VERSION CURRENT_SVN_DATE CURRENT_SVN_REV
.\"! It does not contain info specific to other platforms.]	.\"! It does not contain info specific to other platforms.]
.\"! .PP	.\"! .PP
.\" %ENDIF NOT OS ALL	.\" %ENDIF NOT OS ALL
\fBsmartctl\fP controls the Self\-Monitoring, Analysis and Reporting	\fBsmartctl\fP controls the Self-Monitoring, Analysis and
Technology (SMART) system built into many ATA\-3 and later ATA, IDE and	Reporting Technology (SMART) system built into most ATA/SATA and SCSI/SAS
SCSI\-3 hard drives. The purpose of SMART is to monitor the reliability	hard drives and solid-state drives.
of the hard drive and predict drive failures, and to carry out	The purpose of SMART is to monitor the reliability of the hard drive
different types of drive self\-tests. This version of \fBsmartctl\fP	and predict drive failures, and to carry out different types of drive
is compatible with ATA/ATAPI\-7 and earlier standards (see REFERENCES	self-tests.
below)	\fBsmartctl\fP also supports some features not related to SMART.
	This version of \fBsmartctl\fP is compatible with
	ACS-2, ATA8-ACS, ATA/ATAPI-7 and earlier standards
	(see \fBREFERENCES\fP below).

\fBsmartctl\fP is a command line utility designed to perform SMART
tasks such as printing the SMART self\-test and error logs, enabling
and disabling SMART automatic testing, and initiating device
self\-tests. Note: if the user issues a SMART command that is
(apparently) not implemented by the device, \fBsmartctl\fP will print
a warning message but issue the command anyway (see the \fB\-T,
\-\-tolerance\fP option below). This should not cause problems: on
most devices, unimplemented SMART commands issued to a drive are
ignored and/or return an error.

\fBsmartctl\fP also provides support for polling TapeAlert messages	\fBsmartctl\fP also provides support for polling TapeAlert messages
from SCSI tape drives and changers.	from SCSI tape drives and changers.

Line 78 below. For disks behind HighPoint RocketRAID controlle	Line 71 below. For disks behind HighPoint RocketRAID controlle
\fB"/dev/sd[a\-z]"\fP. For disks behind Areca SATA RAID controllers,	\fB"/dev/sd[a\-z]"\fP. For disks behind Areca SATA RAID controllers,
you need \fB"/dev/sg[2\-9]"\fP (note that smartmontools interacts with	you need \fB"/dev/sg[2\-9]"\fP (note that smartmontools interacts with
the Areca controllers via a SCSI generic device which is different	the Areca controllers via a SCSI generic device which is different
than the SCSI device used for reading and writing data)!	than the SCSI device used for reading and writing data)! For HP Smart
	Array RAID controllers, there are three currently supported drivers: cciss,
	hpsa, and hpahcisr. For disks accessed via the cciss driver the device nodes
	are of the form \fB"/dev/cciss/c[0\-9]d0"\fP. For disks accessed via
	the hpahcisr and hpsa drivers, the device nodes you need are \fB"/dev/sg[0\-9]*"\fP.
	("lsscsi \-g" is helpful in determining which scsi generic device node corresponds
	to which device.) Use the nodes corresponding to the RAID controllers,
	not the nodes corresponding to logical drives. See the \fB\-d\fP option below, as well.
.\" %ENDIF OS Linux	.\" %ENDIF OS Linux
.\" %IF OS Darwin	.\" %IF OS Darwin
.IP \fBDARWIN\fP: 9	.IP \fBDARWIN\fP: 9
Use the forms \fB/dev/disk[0\-9]\fP or equivalently \fBdisk[0\-9]\fP or equivalently	Use the forms \fB/dev/disk[0\-9]\fP or equivalently \fBdisk[0\-9]\fP or equivalently
\fB/dev/rdisk[0\-9]\fP. Long forms are also available: please use \'\-h\' to see some	\fB/dev/rdisk[0\-9]\fP. Long forms are also available: please use \'\-h\' to see some
examples. Note that there is currently no Darwin SCSI support.	examples. Note that there is currently no Darwin SCSI support.

	Use the OS X SAT SMART Driver to access SMART data on SAT capable USB and
	Firewire devices (see INSTALL file).
.\" %ENDIF OS Darwin	.\" %ENDIF OS Darwin
.\" %IF OS FreeBSD	.\" %IF OS FreeBSD
.IP \fBFREEBSD\fP: 9	.IP \fBFREEBSD\fP: 9
Use the forms \fB"/dev/ad[0\-9]+"\fP for IDE/ATA	Use the forms \fB"/dev/ad[0\-9]+"\fP for IDE/ATA
devices and \fB"/dev/da[0\-9]+"\fP or \fB"/dev/pass[0\-9]+"\fP for SCSI devices.	devices and \fB"/dev/da[0\-9]+"\fP or \fB"/dev/pass[0\-9]+"\fP for SCSI devices.
For SATA devices on AHCI bus use \fB"/dev/ada[0\-9]+"\fP format.	For SATA devices on AHCI bus use \fB"/dev/ada[0\-9]+"\fP format. For HP Smart
	Array RAID controllers, use \fB"/dev/ciss[0\-9]"\fP (and see the \fB-d\fP option,
	below).
.\" %ENDIF OS FreeBSD	.\" %ENDIF OS FreeBSD
.\" %IF OS NetBSD OpenBSD	.\" %IF OS NetBSD OpenBSD
.IP \fBNETBSD/OPENBSD\fP: 9	.IP \fBNETBSD/OPENBSD\fP: 9
Line 105 your architecture.	Line 110 your architecture.
Use the forms \fB"/dev/rdsk/c?t?d?s?"\fP for IDE/ATA and SCSI disk	Use the forms \fB"/dev/rdsk/c?t?d?s?"\fP for IDE/ATA and SCSI disk
devices, and \fB"/dev/rmt/*"\fP for SCSI tape devices.	devices, and \fB"/dev/rmt/*"\fP for SCSI tape devices.
.\" %ENDIF OS Solaris	.\" %ENDIF OS Solaris
.\" %IF OS Windows
.IP \fBWINDOWS\ 9x/ME\fP: 9
Use the forms \fB"/dev/hd[a\-d]"\fP for standard IDE/ATA devices
accessed via SMARTVSD.VXD, and \fB"/dev/hd[e\-h]"\fP for additional devices
accessed via a patched SMARTVSE.VXD (see INSTALL file for details).
Use the form \fB"/dev/scsi[0\-9][0\-f]"\fP for SCSI devices via an aspi dll
on ASPI adapter 0\-9, ID 0\-15. The prefix \fB"/dev/"\fP is optional.
.\" %ENDIF OS Windows
.\" %IF OS Windows Cygwin	.\" %IF OS Windows Cygwin
.IP \fBWINDOWS\ NT4/2000/XP/2003/Vista/Win7/2008\fP: 9	.IP \fBWINDOWS\fP: 9
Use the forms \fB"/dev/sd[a\-z]"\fP for IDE/(S)ATA and SCSI disks	Use the forms \fB"/dev/sd[a\-z]"\fP for IDE/(S)ATA and SCSI disks
"\\\\.\\PhysicalDrive[0\-25]" (where "a" maps to "0").	"\\\\.\\PhysicalDrive[0\-25]" (where "a" maps to "0").
	Use \fB"/dev/sd[a\-z][a\-z]"\fP for "\\\\.\\PhysicalDrive[26\-...]".
These disks can also be referred to as \fB"/dev/pd[0\-255]"\fP for	These disks can also be referred to as \fB"/dev/pd[0\-255]"\fP for
"\\\\.\\PhysicalDrive[0\-255]".	"\\\\.\\PhysicalDrive[0\-255]".
ATA disks can also be referred to as \fB"/dev/hd[a\-z]"\fP for	ATA disks can also be referred to as \fB"/dev/hd[a\-z]"\fP for
Line 138 in the driver. Use \fB"/dev/tw_cli/stdin"\fP or \fB"/d	Line 136 in the driver. Use \fB"/dev/tw_cli/stdin"\fP or \fB"/d
to parse CLI or 3DM output from standard input or clipboard.	to parse CLI or 3DM output from standard input or clipboard.
The option \'\-d 3ware,N\' is not necessary on Windows.	The option \'\-d 3ware,N\' is not necessary on Windows.

[NEW EXPERIMENTAL SMARTCTL FEATURE] For disks behind Intel Matrix RAID	For disks behind an Intel ICHxR controller with RST driver use
driver use \fB"/dev/csmi[0\-9],N"\fP where N specifies the port behind	\fB"/dev/csmi[0\-9],N"\fP where N specifies the port behind the logical
the logical scsi controller "\\\\.\\Scsi[0\-9]:".	scsi controller "\\\\.\\Scsi[0\-9]:".

	[NEW EXPERIMENTAL SMARTCTL FEATURE] For SATA or SAS disks behind an Areca
	controller use \fB"/dev/arcmsr[0\-9]"\fP, see \'\-d areca,N[/E]\' below.

The prefix \fB"/dev/"\fP is optional.	The prefix \fB"/dev/"\fP is optional.
.\" %ENDIF OS Windows Cygwin	.\" %ENDIF OS Windows Cygwin
.\" %IF OS Cygwin
.IP \fBCYGWIN\fP: 9
See "WINDOWS NT4/2000/XP/2003/Vista/Win7/2008" above.
.\" %ENDIF OS Cygwin
.\" %IF OS OS2	.\" %IF OS OS2
.IP \fBOS/2,eComStation\fP: 9	.IP \fBOS/2,eComStation\fP: 9
Use the form \fB"/dev/hd[a\-z]"\fP for IDE/ATA devices.	Use the form \fB"/dev/hd[a\-z]"\fP for IDE/ATA devices.
Line 157 interprets it's own debug output from standard input.	Line 155 interprets it's own debug output from standard input.
See \'\-r ataioctl\' below for details.	See \'\-r ataioctl\' below for details.
.PP	.PP
Based on the device path, \fBsmartctl\fP will guess the device type	Based on the device path, \fBsmartctl\fP will guess the device type
(ATA or SCSI). If necessary, the \'\-d\' option can be used to over\-ride	(ATA or SCSI). If necessary, the \'\-d\' option can be used to override
this guess	this guess

Note that the printed output of \fBsmartctl\fP displays most numerical	Note that the printed output of \fBsmartctl\fP displays most numerical
Line 196 in the smartmontools database (see \'\-v\' options bel	Line 194 in the smartmontools database (see \'\-v\' options bel
drive model family may also be printed. If \'\-n\' (see below) is	drive model family may also be printed. If \'\-n\' (see below) is
specified, the power mode of the drive is printed.	specified, the power mode of the drive is printed.
.TP	.TP
	.B \-\-identify[=[w][nvb]]
	[ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] Prints an annotated
	table of the IDENTIFY DEVICE data.
	By default, only valid words (words not equal to 0x0000 or 0xffff)
	and nonzero bits and bit fields are printed.
	This can be changed by the optional argument which consists of one or
	two characters from the set \'wnvb\'.
	The character \'w\' enables printing of all 256 words. The character
	\'n\' suppresses printing of bits, \'v\' enables printing of all bits
	from valid words, \'b\' enables printing of all bits.
	For example \'\-\-identify=n\' (valid words, no bits) produces the
	shortest output and \'\-\-identify=wb\' (all words, all bits) produces
	the longest output.
	.TP
.B \-a, \-\-all	.B \-a, \-\-all
Prints all SMART information about the disk, or TapeAlert information	Prints all SMART information about the disk, or TapeAlert information
about the tape drive or changer. For ATA devices this is equivalent	about the tape drive or changer. For ATA devices this is equivalent
Line 214 and the SMART options which require support for 48-bit	Line 226 and the SMART options which require support for 48-bit
Prints all SMART and non-SMART information about the device. For ATA	Prints all SMART and non-SMART information about the device. For ATA
devices this is equivalent to	devices this is equivalent to
.nf	.nf
\'\-H \-i \-c \-A \-f brief \-l xerror,error \-l xselftest,selftest	\'\-H \-i \-g all \-c \-A \-f brief \-l xerror,error \-l xselftest,selftest
\-l selective \-l directory \-l scttemp \-l scterc \-l sataphy\'.	\-l selective \-l directory \-l scttemp \-l scterc \-l devstat \-l sataphy\'.
.fi	.fi
and for SCSI, this is equivalent to	and for SCSI, this is equivalent to
.nf	.nf
Line 238 This option can be used to create a draft \fBsmartd.co	Line 250 This option can be used to create a draft \fBsmartd.co
All options after \'\-\-\' are appended to each output line.	All options after \'\-\-\' are appended to each output line.
For example:	For example:
.nf	.nf
smartctl --scan-open -- -a -W 4,45,50 -m admin@work > smartd.conf	smartctl \-\-scan\-open \-\- \-a \-W 4,45,50 \-m admin@work > smartd.conf
.fi	.fi
	.TP
	.B \-g NAME, \-\-get=NAME
	Get non-SMART device settings. See \'\-s, \-\-set\' below for further info.

.TP	.TP
.B RUN\-TIME BEHAVIOR OPTIONS:	.B RUN-TIME BEHAVIOR OPTIONS:
.TP	.TP
.B \-q TYPE, \-\-quietmode=TYPE	.B \-q TYPE, \-\-quietmode=TYPE
Specifies that \fBsmartctl\fP should run in one of the two quiet modes	Specifies that \fBsmartctl\fP should run in one of the two quiet modes
Line 250 described here. The valid arguments to this option ar	Line 265 described here. The valid arguments to this option ar

.I errorsonly	.I errorsonly
\- only print: For the \'\-l error\' option, if nonzero, the number	\- only print: For the \'\-l error\' option, if nonzero, the number
of errors recorded in the SMART error log and the power\-on time when	of errors recorded in the SMART error log and the power-on time when
they occurred; For the \'\-l selftest\' option, errors recorded in the device	they occurred; For the \'\-l selftest\' option, errors recorded in the device
self\-test log; For the \'\-H\' option, SMART "disk failing" status or device	self-test log; For the \'\-H\' option, SMART "disk failing" status or device
Attributes (pre\-failure or usage) which failed either now or in the	Attributes (pre-failure or usage) which failed either now or in the
past; For the \'\-A\' option, device Attributes (pre\-failure or usage)	past; For the \'\-A\' option, device Attributes (pre-failure or usage)
which failed either now or in the past.	which failed either now or in the past.

.I silent	.I silent
Line 269 Specifies the type of the device.	Line 284 Specifies the type of the device.
The valid arguments to this option are:	The valid arguments to this option are:

.I auto	.I auto
- attempt to guess the device type from the device name or from	\- attempt to guess the device type from the device name or from
controller type info provided by the operating system or from	controller type info provided by the operating system or from
a matching USB ID entry in the drive database.	a matching USB ID entry in the drive database.
This is the default.	This is the default.

.I test	.I test
- prints the guessed type, then opens the device and prints the	\- prints the guessed type, then opens the device and prints the
(possibly changed) TYPE name and then exists without performing	(possibly changed) TYPE name and then exists without performing
any further commands.	any further commands.

Line 290 from issuing SCSI commands to an ATA device.	Line 305 from issuing SCSI commands to an ATA device.
\fBsmartctl\fP	\fBsmartctl\fP
from issuing ATA commands to a SCSI device.	from issuing ATA commands to a SCSI device.

.I sat	.I sat[,auto][,N]
\- the device type is SCSI to ATA Translation (SAT).	\- the device type is SCSI to ATA Translation (SAT).
This is for ATA disks that have a SCSI to ATA Translation (SAT) Layer	This is for ATA disks that have a SCSI to ATA Translation (SAT) Layer
(SATL) between the disk and the operating system.	(SATL) between the disk and the operating system.
Line 298 SAT defines two ATA PASS THROUGH SCSI commands, one 12	Line 313 SAT defines two ATA PASS THROUGH SCSI commands, one 12
the other 16 bytes long. The default is the 16 byte variant which can be	the other 16 bytes long. The default is the 16 byte variant which can be
overridden with either \'\-d sat,12\' or \'\-d sat,16\'.	overridden with either \'\-d sat,12\' or \'\-d sat,16\'.

	If \'\-d sat,auto\' is specified, device type SAT (for ATA/SATA disks) is
	only used if the SCSI INQUIRY data reports a SATL (VENDOR: "ATA ").
	Otherwise device type SCSI (for SCSI/SAS disks) is used.

.I usbcypress	.I usbcypress
\- this device type is for ATA disks that are behind a Cypress USB to PATA	\- this device type is for ATA disks that are behind a Cypress USB to PATA
bridge. This will use the ATACB proprietary scsi pass through command.	bridge. This will use the ATACB proprietary scsi pass through command.
Line 305 The default SCSI operation code is 0x24, but although	Line 324 The default SCSI operation code is 0x24, but although
with \'\-d usbcypress,0xN\', where N is the scsi operation code,	with \'\-d usbcypress,0xN\', where N is the scsi operation code,
you're running the risk of damage to the device or filesystems on it.	you're running the risk of damage to the device or filesystems on it.

.I usbjmicron	.I usbjmicron[,p][,x][,PORT]
- this device type is for SATA disks that are behind a JMicron USB to	\- this device type is for SATA disks that are behind a JMicron USB to
PATA/SATA bridge. The 48-bit ATA commands (required e.g. for \'\-l xerror\',	PATA/SATA bridge. The 48-bit ATA commands (required e.g. for \'\-l xerror\',
see below) do not work with all of these bridges and are therefore disabled by	see below) do not work with all of these bridges and are therefore disabled by
default. These commands can be enabled by \'\-d usbjmicron,x\'.	default. These commands can be enabled by \'\-d usbjmicron,x\'.
Line 320 CAUTION: Specifying \',x\' for a device which does not	Line 339 CAUTION: Specifying \',x\' for a device which does not
in I/O errors and may disconnect the drive. The same applies if the specified	in I/O errors and may disconnect the drive. The same applies if the specified
PORT does not exist or is not connected to a disk.	PORT does not exist or is not connected to a disk.

	[NEW EXPERIMENTAL SMARTCTL FEATURE]
	The Prolific PL2507/3507 USB bridges with older firmware support a pass-through
	command similar to JMicron and work with \'\-d usbjmicron,0\'.
	Newer Prolific firmware requires a modified command which can be selected by
	\'\-d usbjmicron,p\'.
	Note that this does not yet support the SMART status command.

.I usbsunplus	.I usbsunplus
\- this device type is for SATA disks that are behind a SunplusIT USB to SATA	\- this device type is for SATA disks that are behind a SunplusIT USB to SATA
bridge.	bridge.
Line 341 Use syntax such as:	Line 367 Use syntax such as:
.nf	.nf
\fBsmartctl \-a \-d megaraid,0 /dev/sdb\fP	\fBsmartctl \-a \-d megaraid,0 /dev/sdb\fP
.fi	.fi
	.nf
	\fBsmartctl \-a \-d megaraid,0 /dev/bus/0\fP
	.fi
This interface will also work for Dell PERC controllers.	This interface will also work for Dell PERC controllers.
The following /dev/XXX entry must exist:	It is possible to set RAID device name as /dev/bus/N, where N is a SCSI bus
	number.

	The following entry in /proc/devices must exist:
.fi	.fi
For PERC2/3/4 controllers: \fB/dev/megadev0\fP	For PERC2/3/4 controllers: \fBmegadevN\fP
.fi	.fi
For PERC5/6 controllers: \fB/dev/megaraid_sas_ioctl_node\fP	For PERC5/6 controllers: \fBmegaraid_sas_ioctlN\fP

.\" %ENDIF OS Linux	.\" %ENDIF OS Linux
.\" %IF OS FreeBSD Linux	.\" %IF OS FreeBSD Linux
Line 357 connected to a 3ware RAID controller. The non-negativ	Line 389 connected to a 3ware RAID controller. The non-negativ
is monitored.	is monitored.
Use syntax such as:	Use syntax such as:
.nf	.nf
\fBsmartctl \-a \-d 3ware,2 /dev/sda\fP	\fBsmartctl \-a \-d 3ware,2 /dev/sda\fP [Linux only]
.fi	.fi
.nf	.nf
\fBsmartctl \-a \-d 3ware,0 /dev/twe0\fP	\fBsmartctl \-a \-d 3ware,0 /dev/twe0\fP
Line 366 Use syntax such as:	Line 398 Use syntax such as:
\fBsmartctl \-a \-d 3ware,1 /dev/twa0\fP	\fBsmartctl \-a \-d 3ware,1 /dev/twa0\fP
.fi	.fi
.nf	.nf
\fBsmartctl \-a \-d 3ware,1 /dev/twl0\fP	\fBsmartctl \-a \-d 3ware,1 /dev/twl0\fP [Linux only]
.fi	.fi
	.nf
	\fBsmartctl \-a \-d 3ware,1 /dev/tws0\fP [FreeBSD only]
	.fi
The first two forms, which refer to devices /dev/sda\-z and /dev/twe0\-15,	The first two forms, which refer to devices /dev/sda\-z and /dev/twe0\-15,
may be used with 3ware series 6000, 7000, and 8000 series controllers	may be used with 3ware series 6000, 7000, and 8000 series controllers
that use the 3x\-xxxx driver.	that use the 3x-xxxx driver.
\fBNote that the /dev/sda\-z form is deprecated\fP starting with	\fBNote that the /dev/sda\-z form is deprecated\fP starting with
the Linux 2.6 kernel series and may not be supported by the Linux	the Linux 2.6 kernel series and may not be supported by the Linux
kernel in the near future. The final form, which refers to devices	kernel in the near future. The final form, which refers to devices
/dev/twa0\-15, must be used with 3ware 9000 series controllers, which	/dev/twa0\-15, must be used with 3ware 9000 series controllers, which
use the 3w\-9xxx driver.	use the 3w\-9xxx driver.

The devices /dev/twl0\-15 must be used with the 3ware/LSI 9750 series	The devices /dev/twl0\-15 [Linux] or /dev/tws0\-15 [FreeBSD] must be used with the 3ware/LSI 9750 series
controllers which use the 3w-sas driver.	controllers which use the 3w-sas driver.

Note that if the special character device nodes /dev/twl?, /dev/twa?	Note that if the special character device nodes /dev/tw[ls]?, /dev/twa?
and /dev/twe? do not exist, or exist with the incorrect major or minor	and /dev/twe? do not exist, or exist with the incorrect major or minor
numbers, smartctl will recreate them on the fly. Typically /dev/twa0	numbers, smartctl will recreate them on the fly. Typically /dev/twa0
refers to the first 9000\-series controller, /dev/twa1 refers to the	refers to the first 9000-series controller, /dev/twa1 refers to the
second 9000 series controller, and so on. The /dev/twl0 devices refers	second 9000 series controller, and so on. The /dev/twl0 devices refers
to the first 9750 series controller, /dev/twl1 resfers to the second	to the first 9750 series controller, /dev/twl1 resfers to the second
9750 series controller, and so on. Likewise /dev/twe0 refers to	9750 series controller, and so on. Likewise /dev/twe0 refers to
the first 6/7/8000\-series controller, /dev/twe1 refers to the second	the first 6/7/8000-series controller, /dev/twe1 refers to the second
6/7/8000 series controller, and so on.	6/7/8000 series controller, and so on.

Note that for the 6/7/8000 controllers, \fBany\fP of the physical	Note that for the 6/7/8000 controllers, \fBany\fP of the physical
Line 409 disk attached to it, the behavior of \fBsmartctl\fP de	Line 444 disk attached to it, the behavior of \fBsmartctl\fP de
specific controller model, firmware, Linux kernel and platform. In	specific controller model, firmware, Linux kernel and platform. In
some cases you will get a warning message that the device does not	some cases you will get a warning message that the device does not
exist. In other cases you will be presented with \'void\' data for a	exist. In other cases you will be presented with \'void\' data for a
non\-existent device.	non-existent device.

Note that if the /dev/sd? addressing form is used, then older 3w\-xxxx	Note that if the /dev/sd? addressing form is used, then older 3w-xxxx
drivers do not pass the "Enable Autosave"	drivers do not pass the "Enable Autosave"
(\'\fB\-S on\fP\') and "Enable Automatic Offline" (\'\fB\-o on\fP\')	(\'\fB\-S on\fP\') and "Enable Automatic Offline" (\'\fB\-o on\fP\')
commands to the disk, and produce these types of harmless syslog error	commands to the disk, and produce these types of harmless syslog error
messages instead: "\fB3w\-xxxx: tw_ioctl(): Passthru size (123392) too	messages instead: "\fB3w-xxxx: tw_ioctl(): Passthru size (123392) too
big\fP". This can be fixed by upgrading to version 1.02.00.037 or	big\fP". This can be fixed by upgrading to version 1.02.00.037 or
later of the 3w\-xxxx driver, or by applying a patch to older	later of the 3w-xxxx driver, or by applying a patch to older
versions. Alternatively, use the character device /dev/twe0\-15 interface.	versions. Alternatively, use the character device /dev/twe0\-15 interface.

The selective self\-test functions (\'\-t select,A\-B\') are only supported	The selective self-test functions (\'\-t select,A\-B\') are only supported
using the character device interface /dev/twl0\-15, /dev/twa0\-15 and /dev/twe0\-15.	using the character device interface /dev/twl0\-15, /dev/tws0\-15, /dev/twa0\-15 and /dev/twe0\-15.
The necessary WRITE LOG commands can not be passed through the SCSI	The necessary WRITE LOG commands can not be passed through the SCSI
interface.	interface.

.\" %ENDIF OS FreeBSD Linux	.\" %ENDIF OS FreeBSD Linux
.\" %IF OS Linux	.\" %IF OS FreeBSD Linux Windows Cygwin
.I areca,N	.I areca,N
\- [Linux only] the device consists of one or more SATA disks connected to an	\- [FreeBSD, Linux, Windows and Cygwin only] the device consists of one or more SATA disks
Areca SATA RAID controller. The positive integer N (in the range from 1 to	connected to an Areca SATA RAID controller. The positive integer N (in the range
24 inclusive) denotes which disk on the controller is monitored.	from 1 to 24 inclusive) denotes which disk on the controller is monitored.
Use syntax such as:	.\" %ENDIF OS FreeBSD Linux Windows Cygwin
	.\" %IF OS Linux
	On Linux use syntax such as:
.nf	.nf
\fBsmartctl \-a \-d areca,2 /dev/sg2\fP	\fBsmartctl \-a \-d areca,2 /dev/sg2\fP
.fi	.fi
.nf	.nf
\fBsmartctl \-a \-d areca,3 /dev/sg3\fP	\fBsmartctl \-a \-d areca,3 /dev/sg3\fP
.fi	.fi
	.\" %ENDIF OS Linux
	.\" %IF OS FreeBSD
	On FreeBSD use syntax such as:
	.nf
	\fBsmartctl \-a \-d areca,2 /dev/arcmsr1\fP
	.fi
	.nf
	\fBsmartctl \-a \-d areca,3 /dev/arcmsr2\fP
	.fi
	.\" %ENDIF OS FreeBSD
	.\" %IF OS Windows Cygwin
	[NEW EXPERIMENTAL SMARTCTL FEATURE] On Windows and Cygwin use syntax such as:
	.nf
	\fBsmartctl \-a \-d areca,2 /dev/arcmsr0\fP
	.fi
	.nf
	\fBsmartctl \-a \-d areca,3 /dev/arcmsr1\fP
	.fi
	.\" %ENDIF OS Windows Cygwin
	.\" %IF OS FreeBSD Linux Windows Cygwin
The first line above addresses the second disk on the first Areca RAID controller.	The first line above addresses the second disk on the first Areca RAID controller.
The second line addresses the third disk on the second Areca RAID	The second line addresses the third disk on the second Areca RAID
controller. To help identify the correct device, use the command:	controller.
	.\" %ENDIF OS FreeBSD Linux Windows Cygwin
	.\" %IF OS Linux
	To help identify the correct device on Linux, use the command:
.nf	.nf
\fBcat /proc/scsi/sg/device_hdr /proc/scsi/sg/devices\fP	\fBcat /proc/scsi/sg/device_hdr /proc/scsi/sg/devices\fP
.fi	.fi
Line 449 to show the SCSI generic devices (one per line, starti	Line 509 to show the SCSI generic devices (one per line, starti
smartmontools are the ones with the type field equal to 3. If the	smartmontools are the ones with the type field equal to 3. If the
incorrect device is addressed, please read the warning/error messages	incorrect device is addressed, please read the warning/error messages
carefully. They should provide hints about what devices to use.	carefully. They should provide hints about what devices to use.
	.\" %ENDIF OS Linux
	.\" %IF OS FreeBSD Linux Windows Cygwin

Important: the Areca controller must have firmware version 1.46 or	Important: the Areca controller must have firmware version 1.46 or
later. Lower-numbered firmware versions will give (harmless) SCSI	later. Lower-numbered firmware versions will give (harmless) SCSI
error messages and no SMART information.	error messages and no SMART information.

.\" %ENDIF OS Linux	.I areca,N/E
	\- [FreeBSD, Linux, Windows and Cygwin only] [NEW EXPERIMENTAL SMARTCTL FEATURE] the
	device consists of one or more SATA or SAS disks connected to an Areca SAS RAID controller.
	The integer N (range 1 to 128) denotes the channel (slot) and E (range
	1 to 8) denotes the enclosure.
	Important: This requires Areca SAS controller firmware version 1.51 or later.

	.\" %ENDIF OS FreeBSD Linux Windows Cygwin
.\" %IF OS FreeBSD Linux	.\" %IF OS FreeBSD Linux
.I cciss,N	.I cciss,N
\- [FreeBSD and Linux only] the device consists of one or more SCSI/SAS disks	\- [FreeBSD and Linux only] the device consists of one or more SCSI/SAS or SATA disks
connected to a cciss RAID controller. The non-negative integer N (in the range	connected to a cciss RAID controller. The non-negative integer N (in the range
from 0 to 15 inclusive) denotes which disk on the controller is monitored.	from 0 to 15 inclusive) denotes which disk on the controller is monitored.

If the controller firmware or driver provides a SAT Layer it may be possible	To look at disks behind HP Smart Array controllers, use syntax
to monitor also SATA disks by specifiying \'\-d sat+cciss,N\'.	such as:
	.\" %ENDIF OS FreeBSD Linux
	.\" %IF OS Linux
	.nf
	\fBsmartctl \-a \-d cciss,0 /dev/cciss/c0d0\fP (cciss driver under Linux)
	.fi
	.nf
	\fBsmartctl \-a \-d cciss,0 /dev/sg2\fP (hpsa or hpahcisr drivers under Linux)
	.fi
	.\" %ENDIF OS Linux
	.\" %IF OS FreeBSD
	.nf
	\fBsmartctl \-a \-d cciss,0 /dev/ciss0\fP (under FreeBSD)
	.fi
	.\" %ENDIF OS FreeBSD
	.\" %IF OS FreeBSD Linux

.I hpt,L/M/N	.I hpt,L/M/N
\- [FreeBSD and Linux only] the device consists of one or more ATA disks	\- [FreeBSD and Linux only] the device consists of one or more ATA disks
connected to a HighPoint RocketRAID controller. The integer L is the	connected to a HighPoint RocketRAID controller. The integer L is the
controller id, the integer M is the channel number, and the integer N	controller id, the integer M is the channel number, and the integer N
is the PMPort number if it is available. The allowed values of L are	is the PMPort number if it is available. The allowed values of L are
from 1 to 4 inclusive, M are from 1 to 16 inclusive and N from 1 to 4	from 1 to 4 inclusive, M are from 1 to 128 inclusive and N from 1 to 4
if PMPort available. And also these values are limited by the model	if PMPort available. And also these values are limited by the model
of the HighPoint RocketRAID controller.	of the HighPoint RocketRAID controller.
Use syntax such as:	Use syntax such as:
Line 503 command failures.	Line 587 command failures.

The behavior of \fBsmartctl\fP depends upon whether the command is	The behavior of \fBsmartctl\fP depends upon whether the command is
"\fBoptional\fP" or "\fBmandatory\fP". Here "\fBmandatory\fP" means	"\fBoptional\fP" or "\fBmandatory\fP". Here "\fBmandatory\fP" means
"required by the ATA/ATAPI\-5 Specification if the device implements	"required by the ATA Specification if the device implements
the SMART command set" and "\fBoptional\fP" means "not required by the	the SMART command set" and "\fBoptional\fP" means "not required by the
ATA/ATAPI\-5 Specification even if the device implements the SMART	ATA Specification even if the device implements the SMART
command set." The "\fBmandatory\fP" ATA and SMART commands are: (1)	command set." The "\fBmandatory\fP" ATA and SMART commands are: (1)
ATA IDENTIFY DEVICE, (2) SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE, (3)	ATA IDENTIFY DEVICE, (2) SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE, (3)
SMART ENABLE/DISABLE, and (4) SMART RETURN STATUS.	SMART ENABLE/DISABLE, and (4) SMART RETURN STATUS.
Line 528 final message, Feature X is \fBnot\fP enabled.	Line 612 final message, Feature X is \fBnot\fP enabled.
\- ignore failure(s) of \fBmandatory\fP SMART commands. This option	\- ignore failure(s) of \fBmandatory\fP SMART commands. This option
may be given more than once. Each additional use of this option will	may be given more than once. Each additional use of this option will
cause one more additional failure to be ignored. Note that the use of	cause one more additional failure to be ignored. Note that the use of
this option can lead to messages like "Feature X not implemented",	this option can lead to messages like "Feature X not supported",
followed shortly by "Error: unable to enable Feature X". In a few	followed shortly by "Feature X enable failed". In a few
such cases, contrary to the final message, Feature X \fBis\fP enabled.	such cases, contrary to the final message, Feature X \fBis\fP enabled.

.I verypermissive	.I verypermissive
Line 540 Please see the note above.	Line 624 Please see the note above.
.B \-b TYPE, \-\-badsum=TYPE	.B \-b TYPE, \-\-badsum=TYPE
[ATA only] Specifies the action \fBsmartctl\fP should take if a checksum	[ATA only] Specifies the action \fBsmartctl\fP should take if a checksum
error is detected in the: (1) Device Identity Structure, (2) SMART	error is detected in the: (1) Device Identity Structure, (2) SMART
Self\-Test Log Structure, (3) SMART Attribute Value Structure, (4) SMART	Self-Test Log Structure, (3) SMART Attribute Value Structure, (4) SMART
Attribute Threshold Structure, or (5) ATA Error Log Structure.	Attribute Threshold Structure, or (5) ATA Error Log Structure.

The valid arguments to this option are:	The valid arguments to this option are:
Line 557 default.	Line 641 default.
.TP	.TP
.B \-r TYPE, \-\-report=TYPE	.B \-r TYPE, \-\-report=TYPE
Intended primarily to help \fBsmartmontools\fP developers understand	Intended primarily to help \fBsmartmontools\fP developers understand
the behavior of \fBsmartmontools\fP on non\-conforming or poorly	the behavior of \fBsmartmontools\fP on non-conforming or poorly
conforming hardware. This option reports details of \fBsmartctl\fP	conforming hardware. This option reports details of \fBsmartctl\fP
transactions with the device. The option can be used multiple times.	transactions with the device. The option can be used multiple times.
When used just once, it shows a record of the ioctl() transactions	When used just once, it shows a record of the ioctl() transactions
Line 593 behaviour. This is does not work for SCSI devices yet.	Line 677 behaviour. This is does not work for SCSI devices yet.
.TP	.TP
.B \-n POWERMODE, \-\-nocheck=POWERMODE	.B \-n POWERMODE, \-\-nocheck=POWERMODE
[ATA only] Specifies if \fBsmartctl\fP should exit before performing any	[ATA only] Specifies if \fBsmartctl\fP should exit before performing any
checks when the device is in a low\-power mode. It may be used to prevent	checks when the device is in a low-power mode. It may be used to prevent
a disk from being spun\-up by \fBsmartctl\fP. The power mode is ignored by	a disk from being spun-up by \fBsmartctl\fP. The power mode is ignored by
default. A nonzero exit status is returned if the device is in one of the	default. A nonzero exit status is returned if the device is in one of the
specified low\-power modes (see RETURN VALUES below).	specified low-power modes (see RETURN VALUES below).

Note: If this option is used it may also be necessary to specify the device	Note: If this option is used it may also be necessary to specify the device
type with the \'-d\' option. Otherwise the device may spin up due to	type with the \'\-d\' option. Otherwise the device may spin up due to
commands issued during device type autodetection.	commands issued during device type autodetection.

The valid arguments to this option are:	The valid arguments to this option are:
Line 637 the corresponding disable command.	Line 721 the corresponding disable command.
Enables or disables SMART on device. The valid arguments to	Enables or disables SMART on device. The valid arguments to
this option are \fIon\fP and \fIoff\fP. Note that the command \'\-s on\'	this option are \fIon\fP and \fIoff\fP. Note that the command \'\-s on\'
(perhaps used with with the \'\-o on\' and \'\-S on\' options) should be	(perhaps used with with the \'\-o on\' and \'\-S on\' options) should be
placed in a start\-up script for your machine, for example in rc.local or	placed in a start-up script for your machine, for example in rc.local or
rc.sysinit. In principle the SMART feature settings are preserved over	rc.sysinit. In principle the SMART feature settings are preserved over
power\-cycling, but it doesn\'t hurt to be sure. It is not necessary (or	power-cycling, but it doesn\'t hurt to be sure. It is not necessary (or
useful) to enable SMART to see the TapeAlert messages.	useful) to enable SMART to see the TapeAlert messages.
.TP	.TP
.B \-o VALUE, \-\-offlineauto=VALUE	.B \-o VALUE, \-\-offlineauto=VALUE
Line 650 and \fIoff\fP.	Line 734 and \fIoff\fP.

Note that the SMART automatic offline test command is listed as	Note that the SMART automatic offline test command is listed as
"Obsolete" in every version of the ATA and ATA/ATAPI Specifications.	"Obsolete" in every version of the ATA and ATA/ATAPI Specifications.
It was originally part of the SFF\-8035i Revision 2.0 specification,	It was originally part of the SFF-8035i Revision 2.0 specification,
but was never part of any ATA specification. However it is	but was never part of any ATA specification. However it is
implemented and used by many vendors. [Good documentation can be found	implemented and used by many vendors. [Good documentation can be found
in IBM\'s Official Published Disk Specifications. For example the IBM	in IBM\'s Official Published Disk Specifications. For example the IBM
Travelstar 40GNX Hard Disk Drive Specifications (Revision 1.1, 22	Travelstar 40GNX Hard Disk Drive Specifications (Revision 1.1, 22
April 2002, Publication # 1541, Document S07N\-7715\-02) page 164. You	April 2002, Publication # 1541, Document S07N-7715-02) page 164. You
can also read the SFF\-8035i Specification \-\- see REFERENCES below.]	can also read the SFF-8035i Specification -- see REFERENCES below.]
You can tell if automatic offline testing is supported by seeing if	You can tell if automatic offline testing is supported by seeing if
this command enables and disables it, as indicated by the \'Auto	this command enables and disables it, as indicated by the \'Auto
Offline Data Collection\' part of the SMART capabilities report	Offline Data Collection\' part of the SMART capabilities report
Line 672 type of test can, in principle, degrade the device per	Line 756 type of test can, in principle, degrade the device per
automatically, on a regular scheduled basis. Normally, the disk will	automatically, on a regular scheduled basis. Normally, the disk will
suspend offline testing while disk accesses are taking place, and then	suspend offline testing while disk accesses are taking place, and then
automatically resume it when the disk would otherwise be idle, so in	automatically resume it when the disk would otherwise be idle, so in
practice it has little effect. Note that a one\-time offline test can	practice it has little effect. Note that a one-time offline test can
also be carried out immediately upon receipt of a user command. See	also be carried out immediately upon receipt of a user command. See
the \'\-t offline\' option below, which causes a one\-time offline test	the \'\-t offline\' option below, which causes a one-time offline test
to be carried out immediately.	to be carried out immediately.

The choice (made by the SFF\-8035i and ATA specification authors) of	The choice (made by the SFF-8035i and ATA specification authors) of
the word \fItesting\fP for these first two categories is unfortunate,	the word \fItesting\fP for these first two categories is unfortunate,
and often leads to confusion. In fact these first two categories of	and often leads to confusion. In fact these first two categories of
online and offline testing could have been more accurately described	online and offline testing could have been more accurately described
Line 690 Attributes will go below their failure thresholds; som	Line 774 Attributes will go below their failure thresholds; som
errors may also appear in the SMART error log. These are visible with	errors may also appear in the SMART error log. These are visible with
the \'\-A\' and \'\-l error\' options respectively.	the \'\-A\' and \'\-l error\' options respectively.

Some SMART attribute values are updated only during off\-line data	Some SMART attribute values are updated only during off-line data
collection activities; the rest are updated during normal operation of	collection activities; the rest are updated during normal operation of
the device or during both normal operation and off\-line testing. The	the device or during both normal operation and off-line testing. The
Attribute value table produced by the \'\-A\' option indicates this in	Attribute value table produced by the \'\-A\' option indicates this in
the UPDATED column. Attributes of the first type are labeled	the UPDATED column. Attributes of the first type are labeled
"Offline" and Attributes of the second type are labeled "Always".	"Offline" and Attributes of the second type are labeled "Always".
Line 701 The \fBthird\fP category of testing (and the \fIonly\f	Line 785 The \fBthird\fP category of testing (and the \fIonly\f
which the word \'testing\' is really an appropriate choice) is "self"	which the word \'testing\' is really an appropriate choice) is "self"
testing. This third type of test is only performed (immediately) when	testing. This third type of test is only performed (immediately) when
a command to run it is issued. The \'\-t\' and \'\-X\' options can be	a command to run it is issued. The \'\-t\' and \'\-X\' options can be
used to carry out and abort such self\-tests; please see below for	used to carry out and abort such self-tests; please see below for
further details.	further details.

Any errors detected in the self testing will be shown in the	Any errors detected in the self testing will be shown in the
SMART self\-test log, which can be examined using the \'\-l selftest\'	SMART self-test log, which can be examined using the \'\-l selftest\'
option.	option.

\fBNote:\fP in this manual page, the word \fB"Test"\fP is used in	\fBNote:\fP in this manual page, the word \fB"Test"\fP is used in
connection with the second category just described, e.g. for the	connection with the second category just described, e.g. for the
"offline" testing. The words \fB"Self\-test"\fP are used in	"offline" testing. The words \fB"Self-test"\fP are used in
connection with the third category.	connection with the third category.
.TP	.TP
.B \-S VALUE, \-\-saveauto=VALUE	.B \-S VALUE, \-\-saveauto=VALUE
[ATA] Enables or disables SMART autosave of device vendor\-specific	[ATA] Enables or disables SMART autosave of device vendor-specific
Attributes. The valid arguments to this option are \fIon\fP	Attributes. The valid arguments to this option are \fIon\fP
and \fIoff\fP. Note that this feature is preserved across disk power	and \fIoff\fP. Note that this feature is preserved across disk power
cycles, so you should only need to issue it once.	cycles, so you should only need to issue it once.
Line 726 a warning if autosave is disabled.	Line 810 a warning if autosave is disabled.
[SCSI] For SCSI devices this toggles the value of the Global Logging	[SCSI] For SCSI devices this toggles the value of the Global Logging
Target Save Disabled (GLTSD) bit in the Control Mode Page. Some disk	Target Save Disabled (GLTSD) bit in the Control Mode Page. Some disk
manufacturers set this bit by default. This prevents error counters,	manufacturers set this bit by default. This prevents error counters,
power\-up hours and other useful data from being placed in non\-volatile	power-up hours and other useful data from being placed in non-volatile
storage, so these values may be reset to zero the next time the device	storage, so these values may be reset to zero the next time the device
is power\-cycled. If the GLTSD bit is set then \'smartctl \-a\' will	is power-cycled. If the GLTSD bit is set then \'smartctl \-a\' will
issue a warning. Use \fIon\fP to clear the GLTSD bit and thus enable	issue a warning. Use \fIon\fP to clear the GLTSD bit and thus enable
saving counters to non\-volatile storage. For extreme streaming\-video	saving counters to non-volatile storage. For extreme streaming-video
type applications you might consider using \fIoff\fP to set the GLTSD	type applications you might consider using \fIoff\fP to set the GLTSD
bit.	bit.
	.TP
	.B \-g NAME, \-\-get=NAME, \-s NAME[,VALUE], \-\-set=NAME[,VALUE]
	Gets/sets non-SMART device settings.
	Note that the \'\-\-set\' option shares its short option \'\-s\' with
	\'\-\-smart\'. Valid arguments are:

	.I all
	\- Gets all values. This is equivalent to
	.nf
	\'-g aam -g apm -g lookahead -g security -g wcache\'
	.fi

	.I aam[,N\|off]
	\- [ATA only] Gets/sets the Automatic Acoustic Management (AAM) feature
	(if supported). A value of 128 sets the most quiet (slowest) mode and 254
	the fastest (loudest) mode, \'off\' disables AAM. Devices may support
	intermediate levels. Values below 128 are defined as vendor specific (0)
	or retired (1 to 127). Note that the AAM feature was declared obsolete in
	ATA ACS-2 Revision 4a (Dec 2010).

	.I apm[,N\|off]
	\- [ATA only] Gets/sets the Advanced Power Management (APM) feature on
	device (if supported). If a value between 1 and 254 is provided, it will
	attempt to enable APM and set the specified value, \'off\' disables APM.
	Note the actual behavior depends on the drive, for example some drives disable
	APM if their value is set above 128. Values below 128 are supposed to allow
	drive spindown, values 128 and above adjust only head-parking frequency,
	although the actual behavior defined is also vendor-specific.

	.I lookahead[,on\|off]
	\- [ATA only] Gets/sets the read look-ahead feature (if supported).
	Read look-ahead is usually enabled by default.

	.I security
	\- [ATA only] Gets the status of ATA Security feature (if supported).
	If ATA Security is enabled an ATA user password is set. The drive will be
	locked on next reset then.

	.I security-freeze
	\- [ATA only] Sets ATA Security feature to frozen mode. This prevents that
	the drive accepts any security commands until next reset. Note that the
	frozen mode may already be set by BIOS or OS.

	.I standby,[N\|off]
	\- [ATA only] Sets the standby (spindown) timer and places the drive in the
	IDLE mode. A value of 0 or \'off\' disables the standby timer.
	Values from 1 to 240 specify timeouts from 5 seconds to 20 minutes in 5
	second increments. Values from 241 to 251 specify timeouts from 30 minutes
	to 330 minutes in 30 minute increments. Value 252 specifies 21 minutes.
	Value 253 specifies a vendor specific time between 8 and 12 hours. Value
	255 specifies 21 minutes and 15 seconds. Some drives may use a vendor
	specific interpretation for the values. Note that there is no get option
	because ATA standards do not specify a method to read the standby timer.

	.I standby,now
	\- [ATA only] Places the drive in the STANDBY mode. This usually spins down
	the drive. The setting of the standby timer is not affected.

	.I wcache[,on\|off]
	\- [ATA] Gets/sets the volatile write cache feature (if supported).
	The write cache is usually enabled by default.

	.I wcache[,on\|off]
	\- [SCSI] [NEW EXPERIMENTAL SMARTCTL FEATURE]
	Gets/sets the \'Write Cache Enable\' (WCE) bit (if supported).
	The write cache is usually enabled by default.

	.I wcreorder[,on\|off]
	\- [ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE]
	Gets/sets Write Cache Reordering.
	If it is disabled (off), disk write scheduling is executed on a
	first-in-first-out (FIFO) basis. If Write Cache Reordering is enabled (on),
	then disk write scheduling may be reordered by the drive. If write cache is
	disabled, the current Write Cache Reordering state is remembered but has
	no effect on non-cached writes, which are always written in the order received.
	The state of Write Cache Reordering has no effect on either NCQ or LCQ queued
	commands.

	.I rcache[,on\|off]
	\- [SCSI only] [NEW EXPERIMENTAL SMARTCTL FEATURE]
	Gets/sets the \'Read Cache Disable\' (RCE) bit. \'Off\' value disables read cache
	(if supported).
	The read cache is usually enabled by default.

.TP	.TP
.B SMART READ AND DISPLAY DATA OPTIONS:	.B SMART READ AND DISPLAY DATA OPTIONS:
.TP	.TP
Line 742 Check: Ask the device to report its SMART health statu	Line 909 Check: Ask the device to report its SMART health statu
TapeAlert messages. SMART status is based on	TapeAlert messages. SMART status is based on
information that it has gathered from online and offline	information that it has gathered from online and offline
tests, which were used to determine/update its	tests, which were used to determine/update its
SMART vendor\-specific Attribute values. TapeAlert status is obtained	SMART vendor-specific Attribute values. TapeAlert status is obtained
by reading the TapeAlert log page.	by reading the TapeAlert log page.

If the device reports failing health status, this means	If the device reports failing health status, this means
Line 758 this happens, use the \'\-a\' option to get more infor	Line 925 this happens, use the \'\-a\' option to get more infor
show what SMART features are implemented and how the device will	show what SMART features are implemented and how the device will
respond to some of the different SMART commands. For example it	respond to some of the different SMART commands. For example it
shows if the device logs errors, if it supports offline surface	shows if the device logs errors, if it supports offline surface
scanning, and so on. If the device can carry out self\-tests, this	scanning, and so on. If the device can carry out self-tests, this
option also shows the estimated time required to run those tests.	option also shows the estimated time required to run those tests.

Note that the time required to run the Self\-tests (listed in minutes)	Note that the time required to run the Self-tests (listed in minutes)
are fixed. However the time required to run the Immediate Offline	are fixed. However the time required to run the Immediate Offline
Test (listed in seconds) is variable. This means that if you issue a	Test (listed in seconds) is variable. This means that if you issue a
command to perform an Immediate Offline test with the \'\-t offline\' option,	command to perform an Immediate Offline test with the \'\-t offline\' option,
Line 778 disk been powered up.	Line 945 disk been powered up.

Each Attribute has a "Raw" value, printed under the heading	Each Attribute has a "Raw" value, printed under the heading
"RAW_VALUE", and a "Normalized" value printed under the heading	"RAW_VALUE", and a "Normalized" value printed under the heading
"VALUE". [Note: \fBsmartctl\fP prints these values in base\-10.] In	"VALUE". [Note: \fBsmartctl\fP prints these values in base-10.] In
the example just given, the "Raw Value" for Attribute 12 would be the	the example just given, the "Raw Value" for Attribute 12 would be the
actual number of times that the disk has been power\-cycled, for	actual number of times that the disk has been power-cycled, for
example 365 if the disk has been turned on once per day for exactly	example 365 if the disk has been turned on once per day for exactly
one year. Each vendor uses their own algorithm to convert this "Raw"	one year. Each vendor uses their own algorithm to convert this "Raw"
value to a "Normalized" value in the range from 1 to 254. Please keep	value to a "Normalized" value in the range from 1 to 254. Please keep
Line 794 not specified by the SMART standard. In most cases, th	Line 961 not specified by the SMART standard. In most cases, th
by \fBsmartctl\fP are sensible. For example the temperature Attribute	by \fBsmartctl\fP are sensible. For example the temperature Attribute
generally has its raw value equal to the temperature in Celsius.	generally has its raw value equal to the temperature in Celsius.
However in some cases vendors use unusual conventions. For example	However in some cases vendors use unusual conventions. For example
the Hitachi disk on my laptop reports its power\-on hours in minutes,	the Hitachi disk on my laptop reports its power-on hours in minutes,
not hours. Some IBM disks track three temperatures rather than one, in	not hours. Some IBM disks track three temperatures rather than one, in
their raw values. And so on.	their raw values. And so on.

Each Attribute also has a Threshold value (whose range is 0 to 255)	Each Attribute also has a Threshold value (whose range is 0 to 255)
which is printed under the heading "THRESH". If the Normalized value	which is printed under the heading "THRESH". If the Normalized value
is \fBless than or equal to\fP the Threshold value, then the Attribute	is \fBless than or equal to\fP the Threshold value, then the Attribute
is said to have failed. If the Attribute is a pre\-failure Attribute,	is said to have failed. If the Attribute is a pre-failure Attribute,
then disk failure is imminent.	then disk failure is imminent.

Each Attribute also has a "Worst" value shown under the heading	Each Attribute also has a "Worst" value shown under the heading
"WORST". This is the smallest (closest to failure) value that the	"WORST". This is the smallest (closest to failure) value that the
disk has recorded at any time during its lifetime when SMART was	disk has recorded at any time during its lifetime when SMART was
enabled. [Note however that some vendors firmware may actually	enabled. [Note however that some vendors firmware may actually
\fBincrease\fP the "Worst" value for some "rate\-type" Attributes.]	\fBincrease\fP the "Worst" value for some "rate-type" Attributes.]

The Attribute table printed out by \fBsmartctl\fP also shows the	The Attribute table printed out by \fBsmartctl\fP also shows the
"TYPE" of the Attribute. Attributes are one of two possible types:	"TYPE" of the Attribute. Attributes are one of two possible types:
Pre\-failure or Old age. Pre\-failure Attributes are ones which, if	Pre-failure or Old age. Pre-failure Attributes are ones which, if
less than or equal to their threshold values, indicate pending disk	less than or equal to their threshold values, indicate pending disk
failure. Old age, or usage Attributes, are ones which indicate	failure. Old age, or usage Attributes, are ones which indicate
end\-of\-product life from old\-age or normal aging and wearout, if	end-of-product life from old-age or normal aging and wearout, if
the Attribute value is less than or equal to the threshold. \fBPlease	the Attribute value is less than or equal to the threshold. \fBPlease
note\fP: the fact that an Attribute is of type 'Pre\-fail' does	note\fP: the fact that an Attribute is of type 'Pre-fail' does
\fBnot\fP mean that your disk is about to fail! It only has this	\fBnot\fP mean that your disk is about to fail! It only has this
meaning if the Attribute\'s current Normalized value is less than or	meaning if the Attribute\'s current Normalized value is less than or
equal to the threshold value.	equal to the threshold value.
Line 831 a dash: \'\-\') then this Attribute is OK now (not fai	Line 998 a dash: \'\-\') then this Attribute is OK now (not fai
also never failed in the past.	also never failed in the past.

The table column labeled "UPDATED" shows if the SMART Attribute values	The table column labeled "UPDATED" shows if the SMART Attribute values
are updated during both normal operation and off\-line testing, or	are updated during both normal operation and off-line testing, or
only during offline testing. The former are labeled "Always" and the	only during offline testing. The former are labeled "Always" and the
latter are labeled "Offline".	latter are labeled "Offline".

So to summarize: the Raw Attribute values are the ones that might have	So to summarize: the Raw Attribute values are the ones that might have
a real physical interpretation, such as "Temperature Celsius",	a real physical interpretation, such as "Temperature Celsius",
"Hours", or "Start\-Stop Cycles". Each manufacturer converts these,	"Hours", or "Start-Stop Cycles". Each manufacturer converts these,
using their detailed knowledge of the disk\'s operations and failure	using their detailed knowledge of the disk\'s operations and failure
modes, to Normalized Attribute values in the range 1\-254. The	modes, to Normalized Attribute values in the range 1\-254. The
current and worst (lowest measured) of these Normalized Attribute	current and worst (lowest measured) of these Normalized Attribute
Line 848 fail, or that it has exceeded its design age or aging	Line 1015 fail, or that it has exceeded its design age or aging
thresholds, or types, it merely reports them from the SMART data on	thresholds, or types, it merely reports them from the SMART data on
the device.	the device.

Note that starting with ATA/ATAPI\-4, revision 4, the meaning of these	Note that starting with ATA/ATAPI-4, revision 4, the meaning of these
Attribute fields has been made entirely vendor\-specific. However most	Attribute fields has been made entirely vendor-specific. However most
ATA/ATAPI\-5 disks seem to respect their meaning, so we have retained	newer ATA/SATA disks seem to respect their meaning, so we have retained
the option of printing the Attribute values.	the option of printing the Attribute values.

	Solid-state drives use different meanings for some of the attributes.
	In this case the attribute name printed by smartctl is incorrect unless
	the drive is already in the smartmontools drive database.

[SCSI] For SCSI devices the "attributes" are obtained from the temperature	[SCSI] For SCSI devices the "attributes" are obtained from the temperature
and start\-stop cycle counter log pages. Certain vendor specific	and start-stop cycle counter log pages. Certain vendor specific
attributes are listed if recognised. The attributes are output in a	attributes are listed if recognised. The attributes are output in a
relatively free format (compared with ATA disk attributes).	relatively free format (compared with ATA disk attributes).
.TP	.TP
.B \-f FORMAT, \-\-format=FORMAT	.B \-f FORMAT, \-\-format=FORMAT
[ATA only] Selects the output format of the attributes to one of:	[ATA only] Selects the output format of the attributes:

.I old	.I old
\- Old smartctl format. This is the default unless the \'\-x\' option is	\- Old smartctl format. This is the default unless the \'\-x\' option is
Line 869 specified.	Line 1040 specified.
\- New format which fits into 80 colums (except in some rare cases).	\- New format which fits into 80 colums (except in some rare cases).
This format also decodes four additional attribute flags.	This format also decodes four additional attribute flags.
This is the default if the '\-x\' option is specified.	This is the default if the '\-x\' option is specified.

	.I hex,id
	\- Print all attribute IDs as hexadecimal numbers.

	.I hex,val
	\- Print all normalized values as hexadecimal numbers.

	.I hex
	\- Same as \'\-f hex,id \-f hex,val\'.
.TP	.TP
.B \-l TYPE, \-\-log=TYPE	.B \-l TYPE, \-\-log=TYPE
Prints either the SMART Error Log, the SMART Self\-Test Log, the SMART	Prints either the SMART Error Log, the SMART Self-Test Log, the SMART
Selective Self\-Test Log [ATA only], the Log Directory [ATA only], or	Selective Self-Test Log [ATA only], the Log Directory [ATA only], or
the Background Scan Results Log [SCSI only].	the Background Scan Results Log [SCSI only].
The valid arguments to this option are:	The valid arguments to this option are:

.I error	.I error
\- [ATA] prints the Summary SMART error log. SMART disks maintain a log	\- [ATA] prints the Summary SMART error log. SMART disks maintain a log
of the most recent five non\-trivial errors. For each of these errors, the	of the most recent five non-trivial errors. For each of these errors, the
disk power\-on lifetime at which the error occurred is recorded, as is	disk power-on lifetime at which the error occurred is recorded, as is
the device status (idle, standby, etc) at the time of the error. For	the device status (idle, standby, etc) at the time of the error. For
some common types of errors, the Error Register (ER) and Status	some common types of errors, the Error Register (ER) and Status
Register (SR) values are decoded and printed as text. The meanings of these	Register (SR) values are decoded and printed as text. The meanings of these
Line 891 are:	Line 1071 are:
\fBEOM\fP: \fBE\fPnd \fBO\fPf \fBM\fPedia	\fBEOM\fP: \fBE\fPnd \fBO\fPf \fBM\fPedia
\fBICRC\fP: \fBI\fPnterface \fBC\fPyclic \fBR\fPedundancy \fBC\fPode (CRC) error	\fBICRC\fP: \fBI\fPnterface \fBC\fPyclic \fBR\fPedundancy \fBC\fPode (CRC) error
\fBIDNF\fP: \fBID\fPentity \fBN\fPot \fBF\fPound	\fBIDNF\fP: \fBID\fPentity \fBN\fPot \fBF\fPound
\fBILI\fP: (packet command\-set specific)	\fBILI\fP: (packet command-set specific)
\fBMC\fP: \fBM\fPedia \fBC\fPhanged	\fBMC\fP: \fBM\fPedia \fBC\fPhanged
\fBMCR\fP: \fBM\fPedia \fBC\fPhange \fBR\fPequest	\fBMCR\fP: \fBM\fPedia \fBC\fPhange \fBR\fPequest
\fBNM\fP: \fBN\fPo \fBM\fPedia	\fBNM\fP: \fBN\fPo \fBM\fPedia
Line 907 Dd+HH:MM:SS.msec where D is the number of days, HH is	Line 1087 Dd+HH:MM:SS.msec where D is the number of days, HH is
minutes, SS is seconds and msec is milliseconds. [Note: this time	minutes, SS is seconds and msec is milliseconds. [Note: this time
stamp wraps after 2^32 milliseconds, or 49 days 17 hours 2 minutes and	stamp wraps after 2^32 milliseconds, or 49 days 17 hours 2 minutes and
47.296 seconds.] The key ATA disk registers are also recorded in the	47.296 seconds.] The key ATA disk registers are also recorded in the
log. The final column of the error log is a text\-string description	log. The final column of the error log is a text-string description
of the ATA command defined by the Command Register (CR) and Feature	of the ATA command defined by the Command Register (CR) and Feature
Register (FR) values. Commands that are obsolete in the most current	Register (FR) values. Commands that are obsolete in the most current
(ATA\-7) spec are listed like this: \fBREAD LONG (w/ retry) [OBS\-4]\fP,	spec are listed like this: \fBREAD LONG (w/ retry) [OBS-4]\fP,
indicating that the command became obsolete with or in the ATA\-4	indicating that the command became obsolete with or in the ATA-4
specification. Similarly, the notation \fB[RET\-\fP\fIN\fP\fB]\fP is	specification. Similarly, the notation \fB[RET\-\fP\fIN\fP\fB]\fP is
used to indicate that a command was retired in the ATA\-\fIN\fP	used to indicate that a command was retired in the ATA-\fIN\fP
specification. Some commands are not defined in any version of the	specification. Some commands are not defined in any version of the
ATA specification but are in common use nonetheless; these are marked	ATA specification but are in common use nonetheless; these are marked
\fB[NS]\fP, meaning non\-standard.	\fB[NS]\fP, meaning non-standard.

The ATA Specification (ATA\-5 Revision 1c, Section 8.41.6.8.2) says:	The ATA Specification (ATA-5 Revision 1c, Section 8.41.6.8.2) says:
\fB"Error log structures shall include UNC errors, IDNF errors for	\fB"Error log structures shall include UNC errors, IDNF errors for
which the address requested was valid, servo errors, write fault	which the address requested was valid, servo errors, write fault
errors, etc. Error log data structures shall not include errors	errors, etc. Error log data structures shall not include errors
Line 931 to data which has been read from the disk, but for whi	Line 1111 to data which has been read from the disk, but for whi
Checking and Correction (ECC) codes are inconsistent. In effect, this	Checking and Correction (ECC) codes are inconsistent. In effect, this
means that the data can not be read.	means that the data can not be read.
.br	.br
\fBIDNF\fP (\fBID N\fPot \fBF\fPound): user\-accessible address could	\fBIDNF\fP (\fBID N\fPot \fBF\fPound): user-accessible address could
not be found. For READ LOG type commands, \fBIDNF\fP can also indicate	not be found. For READ LOG type commands, \fBIDNF\fP can also indicate
that a device data log structure checksum was incorrect.	that a device data log structure checksum was incorrect.

If the command that caused the error was a READ or WRITE command, then	If the command that caused the error was a READ or WRITE command, then
the Logical Block Address (LBA) at which the error occurred will be	the Logical Block Address (LBA) at which the error occurred will be
printed in base 10 and base 16. The LBA is a linear address, which	printed in base 10 and base 16. The LBA is a linear address, which
counts 512\-byte sectors on the disk, starting from zero. (Because of	counts 512-byte sectors on the disk, starting from zero. (Because of
the limitations of the SMART error log, if the LBA is greater than	the limitations of the SMART error log, if the LBA is greater than
0xfffffff, then either no error log entry will be made, or the error	0xfffffff, then either no error log entry will be made, or the error
log entry will have an incorrect LBA. This may happen for drives with	log entry will have an incorrect LBA. This may happen for drives with
Line 963 the contents of the 48-bit LBA register set introduced	Line 1143 the contents of the 48-bit LBA register set introduced
It also supports logs with more than one sector. Each sector holds	It also supports logs with more than one sector. Each sector holds
up to 4 log entries. The actual number of log sectors is vendor	up to 4 log entries. The actual number of log sectors is vendor
specific, typical values for HDD are 2 (Samsung), 5 (Seagate) or	specific, typical values for HDD are 2 (Samsung), 5 (Seagate) or
6 (WD). Some recent SSD devices have much larger error logs.	6 (WD).

Only the 8 most recent error log entries are printed by default.	Only the 8 most recent error log entries are printed by default.
This number can be changed by the optional parameter NUM.	This number can be changed by the optional parameter NUM.
Line 971 This number can be changed by the optional parameter N	Line 1151 This number can be changed by the optional parameter N
If ',error' is appended and the Extended Comprehensive SMART error	If ',error' is appended and the Extended Comprehensive SMART error
log is not supported, the Summary SMART self-test log is printed.	log is not supported, the Summary SMART self-test log is printed.

Please note that some recent (e.g. Samsung) drives report errors only	Please note that recent drives may report errors only in the Extended
in the Extended Comprehensive SMART error log. The Summary SMART error	Comprehensive SMART error log. The Summary SMART error log may be reported
log can be read but is always empty.	as supported but is always empty then.

.I selftest	.I selftest
\- [ATA] prints the SMART self\-test log. The disk maintains a self\-test	\- [ATA] prints the SMART self-test log. The disk maintains a self-test
log showing the results of the self tests, which can be run using the	log showing the results of the self tests, which can be run using the
\'\-t\' option described below. For each of the most recent	\'\-t\' option described below. For each of the most recent
twenty\-one self\-tests, the log shows the type of test (short or	twenty-one self-tests, the log shows the type of test (short or
extended, off\-line or captive) and the final status of the test. If	extended, off-line or captive) and the final status of the test. If
the test did not complete successfully, then the percentage of the	the test did not complete successfully, then the percentage of the
test remaining is shown. The time at which the test took place,	test remaining is shown. The time at which the test took place,
measured in hours of disk lifetime, is also printed. [Note: this time	measured in hours of disk lifetime, is also printed. [Note: this time
Line 991 smartmontools web page has instructions about how to c	Line 1171 smartmontools web page has instructions about how to c
address to the name of the disk file containing the erroneous block.	address to the name of the disk file containing the erroneous block.

.I selftest	.I selftest
\- [SCSI] the self\-test log for a SCSI device has a slightly different	\- [SCSI] the self-test log for a SCSI device has a slightly different
format than for an ATA device. For each of the most recent twenty	format than for an ATA device. For each of the most recent twenty
self\-tests, it shows the type of test and the status (final or in	self-tests, it shows the type of test and the status (final or in
progress) of the test. SCSI standards use the terms "foreground" and	progress) of the test. SCSI standards use the terms "foreground" and
"background" (rather than ATA\'s corresponding "captive" and	"background" (rather than ATA\'s corresponding "captive" and
"off\-line") and "short" and "long" (rather than ATA\'s corresponding	"off-line") and "short" and "long" (rather than ATA\'s corresponding
"short" and "extended") to describe the type of the test. The printed	"short" and "extended") to describe the type of the test. The printed
segment number is only relevant when a test fails in the third or	segment number is only relevant when a test fails in the third or
later test segment. It identifies the test that failed and consists	later test segment. It identifies the test that failed and consists
of either the number of the segment that failed during the test, or	of either the number of the segment that failed during the test, or
the number of the test that failed and the number of the segment in	the number of the test that failed and the number of the segment in
which the test was run, using a vendor\-specific method of putting both	which the test was run, using a vendor-specific method of putting both
numbers into a single byte. The Logical Block Address (LBA) of the	numbers into a single byte. The Logical Block Address (LBA) of the
first error is printed in hexadecimal notation. On Linux systems the	first error is printed in hexadecimal notation. On Linux systems the
smartmontools web page has instructions about how to convert this LBA	smartmontools web page has instructions about how to convert this LBA
Line 1013 can be run using the \'\-t\' option described below (u	Line 1193 can be run using the \'\-t\' option described below (u
test terminology).	test terminology).

.I xselftest[,NUM][,selftest]	.I xselftest[,NUM][,selftest]
\- [ATA only] prints the Extended SMART self\-test log (General Purpose	\- [ATA only] prints the Extended SMART self-test log (General Purpose
Log address 0x07). Unlike the SMART self\-test log (see \'\-l selftest\'	Log address 0x07). Unlike the SMART self-test log (see \'\-l selftest\'
above), it supports 48-bit LBA and logs with more than one sector.	above), it supports 48-bit LBA and logs with more than one sector.
Each sector holds up to 19 log entries. The actual number of log sectors	Each sector holds up to 19 log entries. The actual number of log sectors
is vendor specific, typical values are 1 (Seagate) or 2 (Samsung).	is vendor specific, typical values are 1 (Seagate) or 2 (Samsung).
Line 1027 supported, the old SMART self-test log is printed.	Line 1207 supported, the old SMART self-test log is printed.

.I selective	.I selective
\- [ATA only] Please see the \'\-t select\' option below for a	\- [ATA only] Please see the \'\-t select\' option below for a
description of selective self\-tests. The selective self\-test log	description of selective self-tests. The selective self-test log
shows the start/end Logical Block Addresses (LBA) of each of the five	shows the start/end Logical Block Addresses (LBA) of each of the five
test spans, and their current test status. If the span is being	test spans, and their current test status. If the span is being
tested or the remainder of the disk is being read\-scanned, the	tested or the remainder of the disk is being read-scanned, the
current 65536\-sector block of LBAs being tested is also displayed.	current 65536-sector block of LBAs being tested is also displayed.
The selective self\-test log also shows if a read\-scan of the	The selective self-test log also shows if a read-scan of the
remainder of the disk will be carried out after the selective	remainder of the disk will be carried out after the selective
self\-test has completed (see \'\-t afterselect\' option) and the time	self-test has completed (see \'\-t afterselect\' option) and the time
delay before restarting this read\-scan if it is interrupted (see	delay before restarting this read-scan if it is interrupted (see
\'\-t pending\' option). This is a new smartmontools feature; please	\'\-t pending\' option).
report unusual or incorrect behavior to the smartmontools\-support
mailing list.

.I directory[,gs]	.I directory[,gs]
\- [ATA only] if the device supports the General Purpose Logging feature	\- [ATA only] if the device supports the General Purpose Logging feature
set (ATA\-6 and above) then this prints the Log Directory (the log at	set (ATA-6 and above) then this prints the Log Directory (the log at
address 0). The Log Directory shows what logs are available and their	address 0). The Log Directory shows what logs are available and their
length in sectors (512 bytes). The contents of the logs at address 1	length in sectors (512 bytes). The contents of the logs at address 1
[Summary SMART error log] and at address 6 [SMART self\-test log] may	[Summary SMART error log] and at address 6 [SMART self-test log] may
be printed using the previously\-described	be printed using the previously-described
.I error	.I error
and	and
.I selftest	.I selftest
Line 1058 SL directory by \'\-l directory,q\' or \'\-l directory	Line 1236 SL directory by \'\-l directory,q\' or \'\-l directory

.I background	.I background
\- [SCSI only] the background scan results log outputs information derived	\- [SCSI only] the background scan results log outputs information derived
from Background Media Scans (BMS) done after power up and/or periodocally	from Background Media Scans (BMS) done after power up and/or periodically
(e.g. every 24 hours) on recent SCSI disks. If supported, the BMS status	(e.g. every 24 hours) on recent SCSI disks. If supported, the BMS status
is output first, indicating whether a background scan is currently	is output first, indicating whether a background scan is currently
underway (and if so a progress percentage), the amount of time the disk	underway (and if so a progress percentage), the amount of time the disk
Line 1066 has been powered up and the number of scans already co	Line 1244 has been powered up and the number of scans already co
is a header and a line for each background scan "event". These will	is a header and a line for each background scan "event". These will
typically be either recovered or unrecoverable errors. That latter group	typically be either recovered or unrecoverable errors. That latter group
may need some attention. There is a description of the background scan	may need some attention. There is a description of the background scan
mechansim in section 4.18 of SBC\-3 revision 6 (see www.t10.org ).	mechanism in section 4.18 of SBC-3 revision 6 (see www.t10.org ).

.I scttemp, scttempsts, scttemphist	.I scttemp, scttempsts, scttemphist
\- [ATA only] prints the disk temperature information provided by the	\- [ATA only] prints the disk temperature information provided by the
Line 1078 the SCT Data Table command, and \'scttemp\' prints bot	Line 1256 the SCT Data Table command, and \'scttemp\' prints bot
The temperature values are preserved across power cycles.	The temperature values are preserved across power cycles.
The logging interval can be configured with the	The logging interval can be configured with the
\'\-l scttempint,N[,p]\' option, see below.	\'\-l scttempint,N[,p]\' option, see below.
The SCT commands were introduced in ATA\-8 ACS and were also	The SCT commands were introduced in ATA8-ACS and were also
supported by in many ATA\-7 disks.	supported by many ATA-7 disks.

.I scttempint,N[,p]	.I scttempint,N[,p]
\- [ATA only] clears the SCT temperature history table and sets the	\- [ATA only] clears the SCT temperature history table and sets the
Line 1099 than 65 are probably not supported. For RAID configura	Line 1277 than 65 are probably not supported. For RAID configura
typically set to 70,70 deciseconds.	typically set to 70,70 deciseconds.

.I devstat[,PAGE]	.I devstat[,PAGE]
\- [ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] prints values	\- [ATA only] prints values and descriptions of the ATA Device Statistics
and descriptions of the ATA Device Statistics log pages	log pages (General Purpose Log address 0x04). If no PAGE number is specified,
(General Purpose Log address 0x04). If no PAGE number is specified,
entries from all supported pages are printed. If PAGE 0 is specified,	entries from all supported pages are printed. If PAGE 0 is specified,
the list of supported pages is printed. Device Statistics was	the list of supported pages is printed. Device Statistics was
introduced in ATA\-8 ACS and is only supported by some recent devices	introduced in ACS-2 and is only supported by some recent devices
(e.g. Intel 320 and 710 Series SSDs).	(e.g. Hitachi 7K3000, Intel 320, 330, 520 and 710 Series SSDs, Crucial/Micron
	m4 SSDs).

.I sataphy[,reset]	.I sataphy[,reset]
\- [SATA only] prints values and descriptions of the SATA Phy Event	\- [SATA only] prints values and descriptions of the SATA Phy Event
Counters (General Purpose Log address 0x11). If \'\-l sataphy,reset\'	Counters (General Purpose Log address 0x11). If \'\-l sataphy,reset\'
is specified, all counters are reset after reading the values.	is specified, all counters are reset after reading the values.
	This also works for SATA devices with Packet interface like CD/DVD
	drives.

.I sasphy[,reset]	.I sasphy[,reset]
\- [SAS (SCSI) only] prints values and descriptions of the SAS (SSP)	\- [SAS (SCSI) only] prints values and descriptions of the SAS (SSP)
Line 1156 indicates the device is at the end of its lifetime as	Line 1336 indicates the device is at the end of its lifetime as
manufacturer. The value may reach 255.	manufacturer. The value may reach 255.
.TP	.TP
.B \-v ID,FORMAT[:BYTEORDER][,NAME], \-\-vendorattribute=ID,FORMAT[:BYTEORDER][,NAME]	.B \-v ID,FORMAT[:BYTEORDER][,NAME], \-\-vendorattribute=ID,FORMAT[:BYTEORDER][,NAME]
[ATA only] Sets a vendor\-specific raw value print FORMAT, an optional	[ATA only] Sets a vendor-specific raw value print FORMAT, an optional
BYTEORDER and an optional NAME for Attribute ID.	BYTEORDER and an optional NAME for Attribute ID.
This option may be used multiple times.	This option may be used multiple times.

Line 1165 ID, the settings for all Attributes are changed.	Line 1345 ID, the settings for all Attributes are changed.

The optional BYTEORDER consists of 1 to 8 characters from the	The optional BYTEORDER consists of 1 to 8 characters from the
set \'012345rvwz\'. The characters \'0\' to \'5\' select the byte 0	set \'012345rvwz\'. The characters \'0\' to \'5\' select the byte 0
to 5 from the 48\-bit raw value, \'r\' selects the reserved byte of	to 5 from the 48-bit raw value, \'r\' selects the reserved byte of
the attribute data block, \'v\' selects the normalized value, \'w\'	the attribute data block, \'v\' selects the normalized value, \'w\'
selects the worst value and \'z\' inserts a zero byte.	selects the worst value and \'z\' inserts a zero byte.
The default BYTEORDER is \'543210\' for all 48\-bit formats, \'r543210\'	The default BYTEORDER is \'543210\' for all 48-bit formats, \'r543210\'
for the 54\-bit formats, and \'543210wv\' for the 64\-bit formats.	for the 54-bit formats, and \'543210wv\' for the 64-bit formats.
For example, \'\-v 5,raw48:012345\' prints the raw value of	For example, \'\-v 5,raw48:012345\' prints the raw value of
attribute 5 with big endian instead of little endian	attribute 5 with big endian instead of little endian
byte ordering.	byte ordering.
Line 1185 then exits.	Line 1365 then exits.
Valid arguments for FORMAT are:	Valid arguments for FORMAT are:

.I raw8	.I raw8
\- Print the Raw value as six 8\-bit unsigned base\-10 integers.	\- Print the Raw value as six 8-bit unsigned base-10 integers.
This may be useful for decoding the meaning of the Raw value.	This may be useful for decoding the meaning of the Raw value.

.I raw16	.I raw16
\- Print the Raw value as three 16\-bit unsigned base\-10 integers.	\- Print the Raw value as three 16-bit unsigned base-10 integers.
This may be useful for decoding the meaning of the Raw value.	This may be useful for decoding the meaning of the Raw value.

.I raw48	.I raw48
\- Print the Raw value as a 48\-bit unsigned base\-10 integer.	\- Print the Raw value as a 48-bit unsigned base-10 integer.
This is the default for most attributes.	This is the default for most attributes.

.I hex48	.I hex48
\- Print the Raw value as a 12 digit hexadecimal number.	\- Print the Raw value as a 12 digit hexadecimal number.
This may be useful for decoding the meaning of the Raw value.	This may be useful for decoding the meaning of the Raw value.

	.I raw56
	\- Print the Raw value as a 54-bit unsigned base-10 integer.
	This includes the reserved byte which follows the 48-bit raw value.

	.I hex56
	\- Print the Raw value as a 14 digit hexadecimal number.
	This includes the reserved byte which follows the 48-bit raw value.

.I raw64	.I raw64
\- Print the Raw value as a 64\-bit unsigned base\-10 integer.	\- Print the Raw value as a 64-bit unsigned base-10 integer.
This includes two bytes from the normalized and worst attribute value.	This includes two bytes from the normalized and worst attribute value.
This new raw format is used by some recent SSD devices.	This raw format is used by some SSD devices with Indilinx controller.

.I hex64	.I hex64
\- Print the Raw value as a 16 digit hexadecimal number.	\- Print the Raw value as a 16 digit hexadecimal number.
This includes two bytes from the normalized and worst attribute value.	This includes two bytes from the normalized and worst attribute value.
This new raw format is used by some recent SSD devices.	This raw format is used by some SSD devices with Indilinx controller.

.I min2hour	.I min2hour
\- Raw Attribute is power\-on time in minutes. Its raw value	\- Raw Attribute is power-on time in minutes. Its raw value
will be displayed in the form "Xh+Ym". Here X is hours, and Y is	will be displayed in the form "Xh+Ym". Here X is hours, and Y is
minutes in the range 0\-59 inclusive. Y is always printed with two	minutes in the range 0\-59 inclusive. Y is always printed with two
digits, for example "06" or "31" or "00".	digits, for example "06" or "31" or "00".

.I sec2hour	.I sec2hour
\- Raw Attribute is power\-on time in seconds. Its raw value	\- Raw Attribute is power-on time in seconds. Its raw value
will be displayed in the form "Xh+Ym+Zs". Here X is hours, Y is	will be displayed in the form "Xh+Ym+Zs". Here X is hours, Y is
minutes in the range 0\-59 inclusive, and Z is seconds in the range	minutes in the range 0\-59 inclusive, and Z is seconds in the range
0\-59 inclusive. Y and Z are always printed with two digits, for	0\-59 inclusive. Y and Z are always printed with two digits, for
example "06" or "31" or "00".	example "06" or "31" or "00".

.I halfmin2hour	.I halfmin2hour
\- Raw Attribute is power\-on time, measured in units of 30	\- Raw Attribute is power-on time, measured in units of 30
seconds. This format is used by some Samsung disks. Its raw value	seconds. This format is used by some Samsung disks. Its raw value
will be displayed in the form "Xh+Ym". Here X is hours, and Y is	will be displayed in the form "Xh+Ym". Here X is hours, and Y is
minutes in the range 0\-59 inclusive. Y is always printed with two	minutes in the range 0\-59 inclusive. Y is always printed with two
digits, for example "06" or "31" or "00".	digits, for example "06" or "31" or "00".

.I msec24hour32	.I msec24hour32
\- Raw Attribute is power\-on time measured in 32\-bit hours and 24\-bit	\- Raw Attribute is power-on time measured in 32-bit hours and 24-bit
milliseconds since last hour update. It will be displayed in the form	milliseconds since last hour update. It will be displayed in the form
"Xh+Ym+Z.Ms". Here X is hours, Y is minutes, Z is seconds and M is	"Xh+Ym+Z.Ms". Here X is hours, Y is minutes, Z is seconds and M is
milliseconds.	milliseconds.
Line 1247 specific.	Line 1435 specific.
\- Raw Attribute is ten times the disk temperature in Celsius.	\- Raw Attribute is ten times the disk temperature in Celsius.

.I raw16(raw16)	.I raw16(raw16)
\- Print the raw attribute as a 16\-bit value and two optional	\- Print the raw attribute as a 16-bit value and two optional
16\-bit values if these words are nonzero. This is the default	16-bit values if these words are nonzero. This is the default
for Attributes 5 and 196.	for Attributes 5 and 196.

.I raw16(avg16)	.I raw16(avg16)
Line 1256 for Attributes 5 and 196.	Line 1444 for Attributes 5 and 196.
and an optional "Average" 16-bit value if the word is nonzero.	and an optional "Average" 16-bit value if the word is nonzero.
This is the default for Attribute 3.	This is the default for Attribute 3.

	.I raw24(raw8)
	\- Print the raw attribute as a 24-bit value and three optional
	8-bit values if these bytes are nonzero. This is the default
	for Attribute 9.

.I raw24/raw24	.I raw24/raw24
\- Raw Attribute contains two 24\-bit values. The first is the	\- Raw Attribute contains two 24-bit values. The first is the
number of load cycles. The second is the number of unload cycles.	number of load cycles. The second is the number of unload cycles.
The difference between these two values is the number of times that	The difference between these two values is the number of times that
the drive was unexpectedly powered off (also called an emergency	the drive was unexpectedly powered off (also called an emergency
Line 1266 emergency unload is equivalent to that created by one	Line 1459 emergency unload is equivalent to that created by one
unloads.	unloads.

.I raw24/raw32	.I raw24/raw32
\- Raw attribute is an error rate which consists of a 24\-bit error	\- Raw attribute is an error rate which consists of a 24-bit error
count and a 32\-bit total count.	count and a 32-bit total count.

The following old arguments to \'\-v\' are also still valid:	The following old arguments to \'\-v\' are also still valid:

Line 1331 is not reset if uncorrectable sectors are reallocated	Line 1524 is not reset if uncorrectable sectors are reallocated

.I 220,temp	.I 220,temp
\- same as:	\- same as:
.I 220,raw48,Temperature_Celsius.	.I 220,tempminmax,Temperature_Celsius.

Note: a table of hard drive models, listing which Attribute	Note: a table of hard drive models, listing which Attribute
corresponds to temperature, can be found at:	corresponds to temperature, can be found at:
Line 1339 corresponds to temperature, can be found at:	Line 1532 corresponds to temperature, can be found at:
.TP	.TP
.B \-F TYPE, \-\-firmwarebug=TYPE	.B \-F TYPE, \-\-firmwarebug=TYPE
[ATA only] Modifies the behavior of \fBsmartctl\fP to compensate for some	[ATA only] Modifies the behavior of \fBsmartctl\fP to compensate for some
known and understood device firmware or driver bug. Except \'swapid\',	known and understood device firmware or driver bug. This option may be used
the arguments to this option are exclusive, so that only the final	multiple times. The valid arguments are:
option given is used. The valid values are:

.I none	.I none
\- Assume that the device firmware obeys the ATA specifications. This	\- Assume that the device firmware obeys the ATA specifications. This
is the default, unless the device has presets for \'\-F\' in the	is the default, unless the device has presets for \'\-F\' in the
device database (see note below).	drive database. Using this option on the command line will over-ride any
	preset values.

	.I nologdir
	\- Suppresses read attempts of SMART or GP Log Directory.
	Support for all standard logs is assumed without an actual check.
	Some Intel SSDs may freeze if log address 0 is read.

.I samsung	.I samsung
\- In some Samsung disks (example: model SV4012H Firmware Version:	\- In some Samsung disks (example: model SV4012H Firmware Version:
RM100\-08) some of the two\- and four\-byte quantities in the SMART data	RM100-08) some of the two- and four-byte quantities in the SMART data
structures are byte\-swapped (relative to the ATA specification).	structures are byte-swapped (relative to the ATA specification).
Enabling this option tells \fBsmartctl\fP to evaluate these quantities	Enabling this option tells \fBsmartctl\fP to evaluate these quantities
in byte\-reversed order. Some signs that your disk needs this option	in byte-reversed order. Some signs that your disk needs this option
are (1) no self\-test log printed, even though you have run self\-tests;	are (1) no self-test log printed, even though you have run self-tests;
(2) very large numbers of ATA errors reported in the ATA error log;	(2) very large numbers of ATA errors reported in the ATA error log;
(3) strange and impossible values for the ATA error log timestamps.	(3) strange and impossible values for the ATA error log timestamps.

.I samsung2	.I samsung2
\- In some Samsung disks the number of ATA errors reported is byte swapped.	\- In some Samsung disks the number of ATA errors reported is byte swapped.
Enabling this option tells \fBsmartctl\fP to evaluate this quantity in	Enabling this option tells \fBsmartctl\fP to evaluate this quantity in
byte\-reversed order. An indication that your Samsung disk needs this	byte-reversed order. An indication that your Samsung disk needs this
option is that the self\-test log is printed correctly, but there are a	option is that the self-test log is printed correctly, but there are a
very large number of errors in the SMART error log. This is because	very large number of errors in the SMART error log. This is because
the error count is byte swapped. Thus a disk with five errors	the error count is byte swapped. Thus a disk with five errors
(0x0005) will appear to have 20480 errors (0x5000).	(0x0005) will appear to have 20480 errors (0x5000).

.I samsung3	.I samsung3
\- Some Samsung disks (at least SP2514N with Firmware VF100\-37) report	\- Some Samsung disks (at least SP2514N with Firmware VF100-37) report
a self\-test still in progress with 0% remaining when the test was already	a self-test still in progress with 0% remaining when the test was already
completed. Enabling this option modifies the output of the self\-test	completed. Enabling this option modifies the output of the self-test
execution status (see options \'\-c\' or \'\-a\' above) accordingly.	execution status (see options \'\-c\' or \'\-a\' above) accordingly.

Note that an explicit \'\-F\' option on the command line will	.I xerrorlba
over\-ride any preset values for \'\-F\' (see the \'\-P\' option	\- Fixes LBA byte ordering in Extended Comprehensive SMART error log.
below).	Some disk use little endian byte ordering instead of ATA register
	ordering to specifiy the LBA addresses in the log entries.

.I swapid	.I swapid
\- Fixes byte swapped ATA identify strings (device name, serial number,	\- Fixes byte swapped ATA identify strings (device name, serial number,
Line 1388 in the \fBsmartmontools\fP database, then the presets	Line 1587 in the \fBsmartmontools\fP database, then the presets

\fBsmartctl\fP can automatically set appropriate options for known	\fBsmartctl\fP can automatically set appropriate options for known
drives. For example, the Maxtor 4D080H4 uses Attribute 9 to stores	drives. For example, the Maxtor 4D080H4 uses Attribute 9 to stores
power\-on time in minutes whereas most drives use that Attribute to	power-on time in minutes whereas most drives use that Attribute to
store the power\-on time in hours. The command\-line option \'\-v	store the power-on time in hours. The command-line option \'\-v
9,minutes\' ensures that \fBsmartctl\fP correctly interprets Attribute	9,minutes\' ensures that \fBsmartctl\fP correctly interprets Attribute
9 in this case, but that option is preset for the Maxtor 4D080H4 and	9 in this case, but that option is preset for the Maxtor 4D080H4 and
so need not be specified by the user on the \fBsmartctl\fP command	so need not be specified by the user on the \fBsmartctl\fP command
Line 1411 The valid arguments to this option are:	Line 1610 The valid arguments to this option are:

.I use	.I use
\- if a drive is recognized, then use the stored presets for it. This	\- if a drive is recognized, then use the stored presets for it. This
is the default. Note that presets will NOT over\-ride additional	is the default. Note that presets will NOT override additional
Attribute interpretation (\'\-v N,something\') command\-line options or	Attribute interpretation (\'\-v N,something\') command-line options or
explicit \'\-F\' command\-line options..	explicit \'\-F\' command-line options..

.I ignore	.I ignore
\- do not use presets.	\- do not use presets.
Line 1518 Example:	Line 1717 Example:
.fi	.fi

.TP	.TP
.B SMART RUN/ABORT OFFLINE TEST AND SELF\-TEST OPTIONS:	.B SMART RUN/ABORT OFFLINE TEST AND self-test OPTIONS:
.TP	.TP
.B \-t TEST, \-\-test=TEST	.B \-t TEST, \-\-test=TEST
Executes TEST immediately. The \'\-C\' option can be used in	Executes TEST immediately. The \'\-C\' option can be used in
conjunction with this option to run the short or long (and also for	conjunction with this option to run the short or long (and also for
ATA devices, selective or conveyance) self\-tests in captive mode	ATA devices, selective or conveyance) self-tests in captive mode
(known as "foreground mode" for SCSI devices). Note that only one	(known as "foreground mode" for SCSI devices). Note that only one
test type can be run at a time, so only one test type should be	test type can be run at a time, so only one test type should be
specified per command line. Note also that if a computer is shutdown	specified per command line. Note also that if a computer is shutdown
or power cycled during a self\-test, no harm should result. The	or power cycled during a self-test, no harm should result. The
self\-test will either be aborted or will resume automatically.	self-test will either be aborted or will resume automatically.

The valid arguments to this option are:	All \'\-t TEST\' commands can be given during normal system operation
	unless captive mode (\'\-C\' option) is used.
	A running self-test can, however, degrade performance of the drive.
	Frequent I/O requests from the operating system increase the duration
	of a test. These impacts may vary from device to device.

	If a test failure occurs then the device may discontinue the testing
	and report the result immediately.

	The valid arguments to this option are:

.I offline	.I offline
\- [ATA] runs SMART Immediate Offline Test. This immediately	\- [ATA] runs SMART Immediate Offline Test. This immediately
starts the test described above. This command can be given during	starts the test described above. This command can be given during
Line 1562 tests. The "Self" tests check the electrical and mech	Line 1770 tests. The "Self" tests check the electrical and mech
performance as well as the read performance of the disk. Their	performance as well as the read performance of the disk. Their
results are reported in the Self Test Error Log, readable with	results are reported in the Self Test Error Log, readable with
the \'\-l selftest\' option. Note that on some disks the progress of the	the \'\-l selftest\' option. Note that on some disks the progress of the
self\-test can be monitored by watching this log during the self\-test; with other disks	self-test can be monitored by watching this log during the self-test; with other disks
use the \'\-c\' option to monitor progress.	use the \'\-c\' option to monitor progress.

.I short	.I short
\- [SCSI] runs the "Background short" self\-test.	\- [SCSI] runs the "Background short" self-test.

.I long	.I long
\- [ATA] runs SMART Extended Self Test (tens of minutes). This is a	\- [ATA] runs SMART Extended Self Test (tens of minutes). This is a
Line 1575 above. Note that this command can be given during nor	Line 1783 above. Note that this command can be given during nor
system operation (unless run in captive mode \- see the \'\-C\' option below).	system operation (unless run in captive mode \- see the \'\-C\' option below).

.I long	.I long
\- [SCSI] runs the "Background long" self\-test.	\- [SCSI] runs the "Background long" self-test.

.I conveyance	.I conveyance
\- [ATA only] runs a SMART Conveyance Self Test (minutes). This	\- [ATA only] runs a SMART Conveyance Self Test (minutes). This
self\-test routine is intended to identify damage incurred during	self-test routine is intended to identify damage incurred during
transporting of the device. This self\-test routine should take on the	transporting of the device. This self-test routine should take on the
order of minutes to complete. Note that this command can be given	order of minutes to complete. Note that this command can be given
during normal system operation (unless run in captive mode \- see the	during normal system operation (unless run in captive mode \- see the
\'\-C\' option below).	\'\-C\' option below).
Line 1615 overlap partially or completely, for example:	Line 1823 overlap partially or completely, for example:
.nf	.nf
smartctl \-t select,0\-10 \-t select,5\-15 \-t select,10\-20 /dev/hda	smartctl \-t select,0\-10 \-t select,5\-15 \-t select,10\-20 /dev/hda
.fi	.fi
The results of the selective self\-test can be obtained (both during	The results of the selective self-test can be obtained (both during
and after the test) by printing the SMART self\-test log, using the	and after the test) by printing the SMART self-test log, using the
\'\-l selftest\' option to smartctl.	\'\-l selftest\' option to smartctl.

Selective self tests are particularly useful as disk capacities	Selective self tests are particularly useful as disk capacities
increase: an extended self test (smartctl \-t long) can take several	increase: an extended self test (smartctl \-t long) can take several
hours. Selective self\-tests are helpful if (based on SYSLOG error	hours. Selective self-tests are helpful if (based on SYSLOG error
messages, previous failed self\-tests, or SMART error log entries) you	messages, previous failed self-tests, or SMART error log entries) you
suspect that a disk is having problems at a particular range of	suspect that a disk is having problems at a particular range of
Logical Block Addresses (LBAs).	Logical Block Addresses (LBAs).

Selective self\-tests can be run during normal system operation (unless	Selective self-tests can be run during normal system operation (unless
done in captive mode \- see the \'\-C\' option below).	done in captive mode \- see the \'\-C\' option below).

The following variants of the selective self\-test command use spans based	The following variants of the selective self-test command use spans based
on the ranges from past tests already stored on the disk:	on the ranges from past tests already stored on the disk:

.I select,redo[+SIZE]	.I select,redo[+SIZE]
Line 1681 that the last test was aborted by the host. Otherwise	Line 1889 that the last test was aborted by the host. Otherwise
(above) test.	(above) test.

.I afterselect,on	.I afterselect,on
\- [ATA only] perform an offline read scan after a Selective Self\-test	\- [ATA only] perform an offline read scan after a Selective self-test
has completed. This option must be used together with one or more of	has completed. This option must be used together with one or more of
the \fIselect,N\-M\fP options above. If the LBAs that have been	the \fIselect,N\-M\fP options above. If the LBAs that have been
specified in the Selective self\-test pass the test with no errors	specified in the Selective self-test pass the test with no errors
found, then read scan the \fBremainder\fP of the disk. If the device	found, then read scan the \fBremainder\fP of the disk. If the device
is powered\-cycled while this read scan is in progress, the read scan	is powered-cycled while this read scan is in progress, the read scan
will be automatically resumed after a time specified by the pending	will be automatically resumed after a time specified by the pending
timer (see below). The value of this option is preserved between	timer (see below). The value of this option is preserved between
selective self\-tests.	selective self-tests.

.I afterselect,off	.I afterselect,off
\- [ATA only] do not read scan the remainder of the disk after a	\- [ATA only] do not read scan the remainder of the disk after a
Selective self\-test has completed. This option must be use together	Selective self-test has completed. This option must be use together
with one or more of the \fIselect,N\-M\fP options above. The value of this	with one or more of the \fIselect,N\-M\fP options above. The value of this
option is preserved between selective self\-tests.	option is preserved between selective self-tests.

.I pending,N	.I pending,N
\- [ATA only] set the pending offline read scan timer to N minutes.	\- [ATA only] set the pending offline read scan timer to N minutes.
Here N is an integer in the range from 0 to 65535 inclusive. If the	Here N is an integer in the range from 0 to 65535 inclusive. If the
device is powered off during a read scan after a Selective self\-test,	device is powered off during a read scan after a Selective self-test,
then resume the test automatically N minutes after power\-up. This	then resume the test automatically N minutes after power-up. This
option must be use together with one or more of the \fIselect,N\-M\fP	option must be use together with one or more of the \fIselect,N\-M\fP
options above. The value of this option is preserved between selective	options above. The value of this option is preserved between selective
self\-tests.	self-tests.

.I vendor,N	.I vendor,N
\- [ATA only] issues the ATA command SMART EXECUTE OFF-LINE IMMEDIATE	\- [ATA only] issues the ATA command SMART EXECUTE OFF-LINE IMMEDIATE
Line 1718 T13/1699-D Revision 6a (ATA8-ACS). Note that the subc	Line 1926 T13/1699-D Revision 6a (ATA8-ACS). Note that the subc
\fBWARNING: Only run subcommands documented by the vendor of the	\fBWARNING: Only run subcommands documented by the vendor of the
device.\fP	device.\fP

Example for Intel (X18\-M/X25\-M G2 and 320 Series) SSDs only:	Example for Intel (X18/X25-M G2, 320, 520 and 710 Series) SSDs only:
The subcommand 0x40 (\'\-t vendor,0x40\') clears the timed workload	The subcommand 0x40 (\'\-t vendor,0x40\') clears the timed workload
related SMART attributes (226, 227, 228). Note that the raw values of	related SMART attributes (226, 227, 228). Note that the raw values of
these attributes are held at 65535 (0xffff) until the workload timer	these attributes are held at 65535 (0xffff) until the workload timer
reaches 60 minutes.	reaches 60 minutes.

.I scttempint,N[,p]	.I force
\- is no longer supported, use \'\-l scttempint,N[,p]\' instead, see above.	\- start new self-test even if another test is already running.
	By default a running self-test will not be interrupted to begin another
	test.
.TP	.TP
.B \-C, \-\-captive	.B \-C, \-\-captive
[ATA] Runs self\-tests in captive mode. This has no effect with \'\-t	[ATA] Runs self-tests in captive mode. This has no effect with \'\-t
offline\' or if the \'\-t\' option is not used.	offline\' or if the \'\-t\' option is not used.

\fBWARNING: Tests run in captive mode may busy out the drive for the	\fBWARNING: Tests run in captive mode may busy out the drive for the
length of the test. Only run captive tests on drives without any	length of the test. Only run captive tests on drives without any
mounted partitions!\fP	mounted partitions!\fP

[SCSI] Runs the self\-test in "Foreground" mode.	[SCSI] Runs the self-test in "Foreground" mode.
.TP	.TP
.B \-X, \-\-abort	.B \-X, \-\-abort
Aborts non\-captive SMART Self Tests. Note that this	Aborts non-captive SMART Self Tests. Note that this
command will abort the Offline Immediate Test routine only if your	command will abort the Offline Immediate Test routine only if your
disk has the "Abort Offline collection upon new command" capability.	disk has the "Abort Offline collection upon new command" capability.
.PP	.PP
Line 1809 Disable SMART monitoring and data log collection on dr	Line 2019 Disable SMART monitoring and data log collection on dr
.fi	.fi
Enable SMART on drive /dev/hda, enable automatic offline	Enable SMART on drive /dev/hda, enable automatic offline
testing every four hours, and enable autosaving of	testing every four hours, and enable autosaving of
SMART Attributes. This is a good start\-up line for your system\'s	SMART Attributes. This is a good start-up line for your system\'s
init files. You can issue this command on a running system.	init files. You can issue this command on a running system.
.PP	.PP
.nf	.nf
.B smartctl \-t long /dev/hdc	.B smartctl \-t long /dev/hdc
.fi	.fi
Begin an extended self\-test of drive /dev/hdc. You can issue this	Begin an extended self-test of drive /dev/hdc. You can issue this
command on a running system. The results can be seen in the self\-test	command on a running system. The results can be seen in the self-test
log visible with the \'\-l selftest\' option after it has completed.	log visible with the \'\-l selftest\' option after it has completed.
.PP	.PP
.nf	.nf
Line 1831 the SMART error log, which can be seen with the \'\-l	Line 2041 the SMART error log, which can be seen with the \'\-l
.nf	.nf
.B smartctl \-A \-v 9,minutes /dev/hda	.B smartctl \-A \-v 9,minutes /dev/hda
.fi	.fi
Shows the vendor Attributes, when the disk stores its power\-on time	Shows the vendor Attributes, when the disk stores its power-on time
internally in minutes rather than hours.	internally in minutes rather than hours.
.PP	.PP
.nf	.nf
.B smartctl \-q errorsonly \-H \-l selftest /dev/hda	.B smartctl \-q errorsonly \-H \-l selftest /dev/hda
.fi	.fi
Produces output only if the device returns failing SMART status,	Produces output only if the device returns failing SMART status,
or if some of the logged self\-tests ended with errors.	or if some of the logged self-tests ended with errors.
.PP	.PP
.nf	.nf
.B smartctl \-q silent \-a /dev/hda	.B smartctl \-q silent \-a /dev/hda
Line 1848 printed output. You must use the exit status (the	Line 2058 printed output. You must use the exit status (the
.B $?	.B $?
shell variable) to learn if any Attributes are out of bound, if the	shell variable) to learn if any Attributes are out of bound, if the
SMART status is failing, if there are errors recorded in the	SMART status is failing, if there are errors recorded in the
self\-test log, or if there are errors recorded in the disk error log.	self-test log, or if there are errors recorded in the disk error log.
.PP	.PP
.nf	.nf
.B smartctl \-a \-d 3ware,0 /dev/sda	.B smartctl \-a \-d 3ware,0 /dev/sda
Line 1877 Examine all SMART data for the first SATA (not SAS) di	Line 2087 Examine all SMART data for the first SATA (not SAS) di
.nf	.nf
.B smartctl \-t short \-d 3ware,3 /dev/sdb	.B smartctl \-t short \-d 3ware,3 /dev/sdb
.fi	.fi
Start a short self\-test on the fourth ATA disk connected to the 3ware RAID	Start a short self-test on the fourth ATA disk connected to the 3ware RAID
controller card which is the second SCSI device /dev/sdb.	controller card which is the second SCSI device /dev/sdb.
.PP	.PP
.nf	.nf
.B smartctl \-t long \-d areca,4 /dev/sg2	.B smartctl \-t long \-d areca,4 /dev/sg2
.fi	.fi
Start a long self\-test on the fourth SATA disk connected to an Areca RAID	Start a long self-test on the fourth SATA disk connected to an Areca RAID
controller addressed by /dev/sg2.	controller addressed by /dev/sg2.
.PP	.PP
.nf	.nf
Line 1898 first HighPoint RocketRAID controller card.	Line 2108 first HighPoint RocketRAID controller card.
.B smartctl \-t short \-d hpt,1/1/2 /dev/sda (under Linux)	.B smartctl \-t short \-d hpt,1/1/2 /dev/sda (under Linux)
.B smartctl \-t short \-d hpt,1/1/2 /dev/hptrr (under FreeBSD)	.B smartctl \-t short \-d hpt,1/1/2 /dev/hptrr (under FreeBSD)
.fi	.fi
Start a short self\-test on the (S)ATA disk connected to second pmport on the	Start a short self-test on the (S)ATA disk connected to second pmport on the
first channel of the first HighPoint RocketRAID controller card.	first channel of the first HighPoint RocketRAID controller card.
.PP	.PP
.nf	.nf
.B smartctl \-t select,10\-100 \-t select,30\-300 \-t afterselect,on \-t pending,45 /dev/hda	.B smartctl \-t select,10\-100 \-t select,30\-300 \-t afterselect,on \-t pending,45 /dev/hda
.fi	.fi
Run a selective self\-test on LBAs 10 to 100 and 30 to 300. After the	Run a selective self-test on LBAs 10 to 100 and 30 to 300. After the
these LBAs have been tested, read\-scan the remainder of the disk. If the disk is	these LBAs have been tested, read-scan the remainder of the disk. If the disk is
power\-cycled during the read\-scan, resume the scan 45 minutes after power to the	power-cycled during the read-scan, resume the scan 45 minutes after power to the
device is restored.	device is restored.
.PP	.PP
.nf	.nf
Line 1919 RAID controller card.	Line 2129 RAID controller card.
The return values of \fBsmartctl\fP are defined by a bitmask. If all	The return values of \fBsmartctl\fP are defined by a bitmask. If all
is well with the disk, the return value (exit status) of	is well with the disk, the return value (exit status) of
\fBsmartctl\fP is 0 (all bits turned off). If a problem occurs, or an	\fBsmartctl\fP is 0 (all bits turned off). If a problem occurs, or an
error, potential error, or fault is detected, then a non\-zero status	error, potential error, or fault is detected, then a non-zero status
is returned. In this case, the eight different bits in the return	is returned. In this case, the eight different bits in the return
value have the following meanings for ATA disks; some of these values	value have the following meanings for ATA disks; some of these values
may also be returned for SCSI disks.	may also be returned for SCSI disks.
Line 1932 Device open failed, device did not return an IDENTIFY	Line 2142 Device open failed, device did not return an IDENTIFY
or device is in a low-power mode (see \'\-n\' option above).	or device is in a low-power mode (see \'\-n\' option above).
.TP	.TP
.B Bit 2:	.B Bit 2:
Some SMART command to the disk failed, or there was a checksum error	Some SMART or other ATA command to the disk failed, or there was a checksum
in a SMART data structure (see \'\-b\' option above).	error in a SMART data structure (see \'\-b\' option above).
.TP	.TP
.B Bit 3:	.B Bit 3:
SMART status check returned "DISK FAILING".	SMART status check returned "DISK FAILING".
Line 1950 past.	Line 2160 past.
The device error log contains records of errors.	The device error log contains records of errors.
.TP	.TP
.B Bit 7:	.B Bit 7:
The device self\-test log contains records of errors.	The device self-test log contains records of errors.
[ATA only] Failed self-tests outdated by a newer successful extended	[ATA only] Failed self-tests outdated by a newer successful extended
self\-test are ignored.	self-test are ignored.
.PP	.PP
To test within the shell for whether or not the different bits are	To test within the shell for whether or not the different bits are
turned on or off, you can use the following type of construction (this	turned on or off, you can use the following type of construction (this
Line 1982 once by \fBsmartctl\fP for each initiator for each act	Line 2192 once by \fBsmartctl\fP for each initiator for each act
condition.	condition.

.PP	.PP
.SH AUTHOR	.SH AUTHORS
\fBBruce Allen\fP smartmontools\-support@lists.sourceforge.net	\fBBruce Allen\fP
.fi	.br
University of Wisconsin \- Milwaukee Physics Department	University of Wisconsin \- Milwaukee Physics Department
	.br
	\fBChristian Franke\fP (Windows interface, C++ redesign, most enhancements
	since 2009)
	.br
	\fBsmartmontools\-support@lists.sourceforge.net\fP

.PP	.PP
.SH CONTRIBUTORS	.SH CONTRIBUTORS
The following have made large contributions to smartmontools:	The following have made large contributions to smartmontools:
.nf	.nf
\fBCasper Dik\fP (Solaris SCSI interface)	\fBCasper Dik\fP (Solaris SCSI interface)
\fBChristian Franke\fP (Windows interface, C++ redesign, USB support, ...)
\fBDouglas Gilbert\fP (SCSI subsystem)	\fBDouglas Gilbert\fP (SCSI subsystem)
\fBGuido Guenther\fP (Autoconf/Automake packaging)	\fBGuido Guenther\fP (Autoconf/Automake packaging)
\fBGeoffrey Keating\fP (Darwin ATA interface)	\fBGeoffrey Keating\fP (Darwin ATA interface)
Line 2014 Many other individuals have made smaller contributions	Line 2228 Many other individuals have made smaller contributions
.fi	.fi
This code was derived from the smartsuite package, written by Michael	This code was derived from the smartsuite package, written by Michael
Cornwell, and from the previous UCSC smartsuite package. It extends	Cornwell, and from the previous UCSC smartsuite package. It extends
these to cover ATA\-5 disks. This code was originally developed as a	these to cover ATA-5 disks. This code was originally developed as a
Senior Thesis by Michael Cornwell at the Concurrent Systems Laboratory	Senior Thesis by Michael Cornwell at the Concurrent Systems Laboratory
(now part of the Storage Systems Research Center), Jack Baskin School	(now part of the Storage Systems Research Center), Jack Baskin School
of Engineering, University of California, Santa	of Engineering, University of California, Santa
Line 2033 REFERENCES FOR SMART	Line 2247 REFERENCES FOR SMART
.fi	.fi
An introductory article about smartmontools is \fIMonitoring Hard	An introductory article about smartmontools is \fIMonitoring Hard
Disks with SMART\fP, by Bruce Allen, Linux Journal, January 2004,	Disks with SMART\fP, by Bruce Allen, Linux Journal, January 2004,
pages 74\-77. This is \fBhttp://www.linuxjournal.com/article/6983\fP	pages 74-77. This is \fBhttp://www.linuxjournal.com/article/6983\fP
online.	online.

If you would like to understand better how SMART works, and what it	If you would like to understand better how SMART works, and what it
does, a good place to start is with Sections 4.8 and 6.54 of the first	does, a good place to start is with Sections 4.8 and 6.54 of the first
volume of the \'AT Attachment with Packet Interface\-7\' (ATA/ATAPI\-7)	volume of the \'AT Attachment with Packet Interface-7\' (ATA/ATAPI-7)
specification Revision 4b. This documents the SMART functionality which the	specification Revision 4b. This documents the SMART functionality which the
\fBsmartmontools\fP utilities provide access to.	\fBsmartmontools\fP utilities provide access to.

.fi	.fi
The functioning of SMART was originally defined by the SFF\-8035i	The functioning of SMART was originally defined by the SFF-8035i
revision 2 and the SFF\-8055i revision 1.4 specifications. These are	revision 2 and the SFF-8055i revision 1.4 specifications. These are
publications of the Small Form Factors (SFF) Committee.	publications of the Small Form Factors (SFF) Committee.

Links to these and other documents may be found on the Links page of the	Links to these and other documents may be found on the Links page of the

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.1
changed lines
	Added in v.1.1.1.4