Standard rotating magnetic disks are given preferential treatment in RAID systems because of this bias. RAID storage for SSDs is not required, however it is recommended. Otherwise, does this make SSD...

Standard rotating magnetic disks are given preferential treatment in RAID systems because of this bias. RAID storage for SSDs is not required, however it is recommended. Otherwise, does this make SSD storage for the enterprise a little bit more affordable? Is it required to have redundant drives, and if so, do they have to be solid-state disks (SSD)?