My home NAS has it operating system on a usb stick and data on four sata hard disks that I would like to spin down (so they are less noisy and save some energy). But what if I run an rsync on them every 20 minutes ? Or every hour ? Is it better to let the drives running because the spin down spin up cycle will cause excessive wear on the drive ?
When is it ok to let the drives go to sleep ?
I use this /etc/hdparm.conf for spindown after one minute:
root@gwen:/var/log# cat /etc/hdparm.conf quiet /dev/sdb { spindown_time = 12 } /dev/sdc { spindown_time = 12 } /dev/sdd { spindown_time = 12 } /dev/sde { spindown_time = 12 }
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