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Linux disk is SSD or HDD
How to determine if Linux disk is SSD or HDD :
Linux automatically detects SSD, and since kernel version 2.6.29, you may verify sda with:
cat /sys/block/sda/queue/rotational
You should get 1 for hard disks and 0 for a SSD. In my case, I get 0 (cause it’s a SSD).
server:~# cat /sys/block/sdb/queue/rotational 0
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Linux disk is SSD or HDD
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