How to check the power-on time of the hard disk in Linux VPS/server

A few days ago, I opened a blind box server with a special price of 59 dollars from Mushroom Host. I originally went there with the 100M bandwidth, but after all the hard work, I only got a 50M one. Of course, the independent server needs to test the power-on time of the hard disk. .

①Ubuntu/Debian:

apt install smartmontools
smartctl -A /dev/sda

②CentOS:

yum install smartmontools
smartctl -A /dev/sda

/dev/sda is the hard disk number, usually /dev/sda. If there are multiple hard disks, the second one is /dev/sdb, and the third one is /dev/sdc
Find the last number in the row of Power_On_Hours which is the power-on time of your hard disk (unit: hours).

I tested it and found that the time was 1965 hours, which is 81 days. This kind of hard drive is still very good.

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