Posts tagged S.M.A.R.T.

S.M.A.R.T.: Monitoring
posted on 2015-03-10 02:44:23

Being able to access the S.M.A.R.T. status, give you a better overview on the health of your hardware.

That way you can change failing hardware before it ultimately fails, and prevents it from causing even more havoc.

install

# rhel-based
yum install -y smartmontools
# debian-based
aptitude install -y smartmontools

usage

smartctl -a /dev/sda

This gives you all info on the disk. In case you need something more specific, use man smartctl. There is a lot more info than here.

If you have ever had the case of two failing disks on a six-disc raid10 array, you might get the idea why this could help you, and why you should include a check into your nagios / icinga / whatever monitoring. ;)

If your HDD's are of same age, a rebuild of the new disk could due to it's hard work nature (lot of r/w operations) make another disk fail. As Harddisks are usually of the same age when a disk replacement occurs the first time in that system, this case is more likely than you would like.

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