Turning ON/OFF RAID Storage

[oliklink]

I have over 300TB of RAID storage attached to my Mac Studio over multiple RAID enclosures. Half of the enclosures are "near line storage" (aka replication of the primary storage). I would like to turn off the "near line enclosures" when they are not in use to save power and keep the storage area cooler.
I use a software and agent (ChronoSYnc and ChronoAgent) to copy daily changes. This is scheduled at a specific time of the day.

I thought of adding a light switch timer to shutdown the storage. Feels that it might not be good for the storage to have daily hard shutdowns.
Another solution, would be to send a signal from the Mac Studio to disconnect the RAID storage and then do a hard shutdown.

Looking for a solution. Thanks in advance for the input.

Oliver Klink

 

[micheloupatrick]

You can tell mac OS to leave specific volumes unmounted by default (I understand that you want to turn off the disks completely but this is the best solution I can offer).
Then tell Chronosync to mount the volume before backing up and unmount it when the backup is done.
This is how I handle my backup volumes.