I am thinking of extending my storage and I don’t know if I should buy a JBOD (my current solution) or a RAID capable enclosure.
My “server” is just a small intel nuc with an 8th gen i3. I am happy with the performance, but that might be impacted by a bigger software RAID setup. My current storage setup is a 4-bay JBOD with 4TB drives in RAID 5. And I am thinking of going to 6 x 8TB drives with RAID 6 which will probably be more work for my little CPU
I read somewhere, years ago, that RAID6 takes about 2 cores, on a working server.
That may have been a decade ago, and hardware’s improved significantly since then.
Bet on 1 core being saturated, min, with heavy use of a RAID6 or Z2 array, I suspect…
I’d go with software raid, not hardware: with hardware RAID, a dead array, due to a dead controller-card, means you need EXACTLY the same card, possibly the same firmware-revision, to be able to recover the RAID.
With mdadm, that simply isn’t a problem: mdadm can always understand mdadm RAID’s.
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