General Discussion

In modern cloud data centers like at aws, goigle, and azure, data is not static.

It is temporal. It gets migrated based on its rate of access to slower/cheaper/less power hungry media.

Some data in fact gets moved to media that is idled, offline, until something is needed. It consumes virtually no energy in that state compared to high speed media.

Csp's dont want to waste energy because it is a major expense. Storage systems produce a lot of heat, which then needs crac units to cool. Why keep disks spinning if the data is idle?