Checking drive health with smartctl

smartctl can be used for checking the health of your drives (i.e. HDDs, SSDs) and providing general information and statistics such as the firmware version, serial number, power-on hours and so on. 

You must first ensure that your server has smartctl installed, part of the smartmontools package. 

Once installed, a very basic use of the command would be:

smartctl -a /dev/sdb
You can view your partitions with tools such as "fdisk" (i.e. fdisk -l).

A quick and easy way to check the health of /dev/sdb would be as follows:

smartctl -a /dev/sdb | grep result
Example output:

# smartctl -a /dev/sdb | grep result
SMART overall-health self-assessment test result: PASSED

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