I completely understand the value of putting a hard disk (specifically) to sleep in some cases especially in the pre-SSD days of the past. It can save power, lower noise and such. But in the case of modern systems that are increasingly SSD-based, does this option have any value at all?
My MacBook Air (2018) running Mojave (10.14.1) has “Put hard disks to sleep when possible.” checked off by default (in System Preferences > Energy Saver), but this system uses an SSD.
Is this option only focused on hard disk drives and ignored by SSD drives?
I can’t imagine the internal SSD would ever “sleep” but correct me if I am wrong.