Power Off Retract Count
A few weeks back I created a RAID 1 of two hard drives. Over time I've noticed that each day the SMART data show an increase of 1 for the Power Off Retract Count and the Load Cycle Count despite the fact that I have turned off "Put hard disks to sleep when possible" in System Preferences. Is this something SoftRAID is doing?
I do not think SoftRAID has anything to do with this.
You can prove it either way by:
"Convert" and convert the volume to Apple RAID.
Do your sleep cycle.
Do you get the same result?
Then you can convert back to SoftRAID and let us know.
Note: This SMART result may annoy you, but this is not related to premature drive failure in any way. (according to multiple drive studies)
I don't put the Mac or the hard drives to sleep. They run 24/7 except when there's a power failure or doing an OS or application update that needs a restart.
I just found it weird that this only happens with the RAID and not with the other drive I have installed.
Maybe it's a feature of the drives. The one that doesn't do this is a 2TB HGST Deskstar HDS723020BLA642 while the RAID is using a pair of 8TB Ultrastar HGST HUH728080ALE600.
Since this is a RAID 0 volume, it is easy to test by using Convert, and converting the volume to Apple format.
it well could be a drive behavior.