Comment Re:"NAS" hard drives? (Score 4, Informative) 190
Are the Red drives designed to be paired or run in RAID arrays specifically, as opposed to the Green line that is made for power savings?
Pretty much yes. The Red have better vibration tolerance, and the firmware is tweaked to fit a NAS workload better. For example, a Green will park the head as quickly as it can which for always-on machines can lead to a Green disk reaching its "Load/Unload Cycle" tolerance in months and die prematurely. The Red will not do this.
There's also a difference in how they handle unreadable sectors and such errors which makes the Red play nicer with hardware RAID controllers. An unrecoverable read error in a Green can cause the whole array to go down.