[gentoo-user] How can I power disk off?

[Jarry]

Hi,

In my server I have a few disks which must be running 24/7,
but I also have a single big hard-drive, which is used only
for a few minutes every day, just for backups. How could I
power disk off when not needed (and "on" again when needed)
in order to save a little power and prolong its life?

Jarry
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