Only if cost isn't a big factor vs. space/power reqs for the specific application. For example, in my home NAS I have 5x spinning disks in a RAID 5 configurati

Only if cost isn't a big factor vs. space/power reqs for the specific application. For example, in my home NAS I have 5x spinning disks in a RAID 5 configuration and don't see myself switching to SSDs any time soon because doing so would be a huge cost increase for very little performance gain (network speed is the limiting factor). I think spinning metal will be around for a while yet as a low-cost alternative when performance isn't critical. Remember, tape backups are still widely used and those things are ancient by tech standards.