I’ve been focusing on getting power utilization down and one of the keys to this is disk spin down.
I have set all the max power options and these work, but the problem is, if I even think about the HDD , it spins up.
I assume that anything checking NFS / SMB is still alive might be the culprit, along with bring lists of files / folders to the foreground.
I recall from one of Toms video’s he talks about using SSD’s for caching some information with ZFS. I wondered if using an SSD for caching indexes might stop the disk being spun up unless there is an actual read or write operation. That said I could easily assign more RAM.
However reading about ARC, it talks about caching data rather than indexes.
Are there any strategies that would cache the disk index in RAM / SSD and prevent disk spin up unless something actually needs reading or writing? (I dont care about the lag).
Any other options I should consider?