Again raid 1+0, look at how it works. Very fast, redundant, and hot swappable...Stripped, and mirrored. Yes I’ve built a hot rod or two..
In other words you could pull a drive, replace it. Take the drive you pulled and start a migration, to build another complete system. Space shuttle crap, and a fast way to RE-build a downed system......I would never need it...
The biggest difference between RAID 5 and RAID 10 is how it rebuilds the disks. RAID 10 only reads the surviving mirror and stores the copy to the new drive you replaced. ... However, if a drive fails with RAID 5, it needs to read everything on all the remaining drives to rebuild the new, replaced disk.
I’m not to fond of Software RAID either, I like SCSI, and onboard, disk low level management... The OS or NOS, well you can get as teckie as you like...LOL I like easy... Not lines of code to just create a BOOT strap, to see a disk, to read a disk, then boot from a 60 POUND, 60 meg hard drive. An IBM 36 was that way, that I maintained for quite a few years...
When were talking Backup, that should be a given, guys.. Really, who doesn’t have a tape backup, or at least a CD backup. A HD or SSD will ALWAYS fail, it’s just a question of when...
Another thing, a PS failure, very seldom leads to a drive failure. I’ve never seen one, lower quality PS of old could lead to drive failures, very rare though. Like MFM, RLL, and ESDI drives, before SCSI, and WAY before, any IDE stuff. Again it is a single failure, BUT no data loss. One of a few reasons for RAID to begin with.
Speed, Reliable, not expensive, redundant, and not necessarily a proprietary part needs to replace a failed one...
Replace a Seagate with a Maxtor, give it a physical ID, terminate, and away you go.....
Regards..