smartd is SMART Disk Monitoring Daemon for Linux. SMART is acronym for Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability of the hard drive and predict drive failures, and to carry out different types of drive self-tests.
smartd works with following operating systems:
Linux
*BSD
Solaris etc
How do I Install smartd?
However, smartd is not installed by default. Following are distribution specific steps to install smartd:
Debian Linux:
# apt-get install smartmontools
Red hat/Fedora Linux:
# rpm –ivh kernel-utils
OR
# up2date kernel-utils
OR if you are using Fedora Linux, CentOS
# yum kernel-utils
FreeBSD:
# pkg_add -r -v smartmontools
Before configuring hard disk for SMART monitoring make sure your hard disk is SMART capable:
# smartctl -i /dev/hda
Output:
smartctl version 5.34 [i686-pc-linux-gnu] Copyright (C) 2002-5 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: SAMSUNG SV2002H
Serial Number: 0395J1FR904324
Firmware Version: RA100-04
User Capacity: 20,060,651,520 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 6
ATA Standard is: ATA/ATAPI-6 T13 1410D revision 1
Local Time is: Tue May 2 15:44:09 2006 IST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
You can configure the smartd daemon by editing the file /etc/smartd.conf.
In above output the lines:
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Indicates that it is SMART capable and it is enabled.
Configure SMARTD
Debian Linux
Enable smart by editing /etc/default/smartmontools file.
Smart Configuration file: /etc/smartd.conf
Start/Stop smart: /etc/init.d/smartmontools start | stop
Red Hat Linux
Enable smart by editing /etc/smartd.conf file.
Smart Configuration file: /etc/smartd.conf
Start/Stop smart: /etc/init.d/smartd start | stop
FreeBSD
Enable smart by editing /etc/rc.conf file (add line smartd_enable=”YES").
Smart Configuration file: /etc/smartd.conf
Start/Stop smart: /usr/local/etc/rc.d/smartd.sh start | stop
Example
You can put following directives in Smart Configuration file:
(a) Send an email to alert@example.com for /dev/sdb:
/dev/sdb -m alert@example.com
(b) Read error log:
# smartctl -l error /dev/hdb
(c) Testing hard disk (short or long test):
# smartctl -t short /dev/hdb
# smartctl -t long /dev/hdb
Caution smartd is a monitoring tool not a backup solution. Always perform data backup.
