Smatrcl Check Harddisk Drive Health Condition

Using smartctl command we can check the hard disk whether It is going to bad or not,it is self-monitoring tool, used to detect the reliability of the hard disk.
1)Fist we need to enable the smartctl.
-s value [ -s option is used to enable or disable hard disk]
# smartctl -s on -data /dev/hdc
smartctl version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF ENABLE/DISABLE COMMANDS SECTION ===
SMART Enabled.
-d is used to specified the type.
ata, scsi, marvell, sat, 3ware,
# smartctl -d ata -H /dev/hdc
smartctl version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
If the hard disk health is good condition then we will get result :PASSED.
or we will get Failed

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