Indeed I was wrong, that's what I get by relying on memory alone before I've had coffee. You can change some drive configuration with smartctl, just not spin down time, apologies.
Looks like a drive's spin down is set by using hdparm, installable on your Pi by installing the hdparm package.
Then with hdparm you can set the drive's spin-down in seconds with the S option, e.g.
... assuming your USB disk is /dev/sda of course, to determine the device for your disk you can list block devices with lsblk.
Looks like a drive's spin down is set by using hdparm, installable on your Pi by installing the hdparm package.
Then with hdparm you can set the drive's spin-down in seconds with the S option, e.g.
Code:
sudo hdparm -S 600 /dev/sda
... assuming your USB disk is /dev/sda of course, to determine the device for your disk you can list block devices with lsblk.