HDD aggressively spinning down

I have 2 Iron Wolf drives that are aggressively spinning down. I have tried turning on the standby feature in "drive settings". I have also run sudo hdparm -I /dev/sdc | grep level and get no output. So I run sudo hdparm -S 120 /dev/sdc and get

/dev/sdc: setting standby to 120 (10 minutes)

But nothing. I still see the drive in the "disks" utility with "zzz" immediately after copying a file over to the drive.

Can anyone help?

Thanks, Chris

EDIT: running 18.04

3

1 Answer

Your hdparm command doesn't work because you probably also have the udisks2 daemon running which spins down the disk on its own schedule (and/or overwrites your settings).

Thus, you can either stop/disable/mask that daemon, e.g. to just temporarily stop it:

systemctl stop udisks2.service

Or change the StandbyTimeout= udisk2 setting for your disk.

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