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I have a hard disk in my computer that I use to make backups of my data. I do not use this disk otherwise.

How can I stop this disk from spinning once my backup is finished? Also how would I make it spin back up again before the backup takes place later on?

The drive is a regular SATA drive.

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Umount the filesystem and then run hdparm -S 1 /dev/sdb to set it to spin down after five seconds (replace /dev/sdb with the actual device for the hard disk). This will minimize the power used and heat generated by the hard disk.

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With respect to spinning it back up, you shouldn't have to do anything other than access/use the HDD. unix.stackexchange.com/questions/10930/spin-up-drive-in-linux/… – slm Feb 2 '14 at 6:07
Thanks! How can I restore the default standby timeout value then? I also saw hdparm -Y in the man which seems to set the drive in a deeper sleep mode. Is that not recommended? – Totor Feb 2 '14 at 17:24

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