Selective Sleep

[haralds]

Does anybody know of a utility to set sleep for old spinning disks but not SSDs.

I have one drive that tends to unmount on sleep - very annoying. Currently this is solved by globally turning off drive sleep. But there are a couple of spinning drives on the system that see little use.

 

[jbarley]

Why not unmount the seldom used drives when not in use?
This can be managed from the menubar with a utility such as "Mountain"
https://www.macupdate.com/app/mac/43428/mountain