One problem with RAID 5 configurations. The chance of a sector error screwing things up on a hard drive is one in many trillion. This wasn’t a problem in the past, but it is now that hard drives have trillions of bits on them.
Basically, soon we will reach a point that if one drive on a RAID 5 fails, the odds are realistic that another drive will fail before that failed drive is rebuilt onto a replacement (RAID 5 rebuilds are slow). Going RAID 6 just alleviates the problem, and it too will be surpassed as drives get even bigger.
RAID 10 is better since the rebuild is faster and even if a second drive fails the odds are (on a large RAID 10) that it won’t be the mirror of the one you’re rebuilding. But in either case you’re throwing the dice and don’t have total reliability in case of drive failure.
The days of RAID are numbered for serious use.
You said — The days of RAID are numbered for serious use.
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I haven’t used RAID in the past, but have considered it and had wondered about getting into it. I’ll look and consider what you’re saying in terms of using RAID. Thanks...