Re: raid10 redundancy
From: David T-G <hidden>
Date: 2021-05-12 18:55:06
Phil, et al -- ...and then Phil Turmel said... % % I do this for my medium-speed read-mostly tasks. Raid10,n3 across 4 % or 5 disks gives me redundancy comparable to raid6 (lose any two) % without the CPU load of parity and syndrome calculations. I've been reading and I still need to catch up on the notation, but how much space do you get in the end? I'm hoping to grow our disk farm and end up with 8+ disks. I'm more than a bit nervous about RAID5 across a bunch of 6T (or bigger) disks, so I've been thinking of RAID6. That would give me 6x6 = 36T plus two parity. Putting 8 disks in RAID10 should give me 6x4 = 24T with mirroring. That's a pretty hefty space penalty :-( But ... How does RAID10 across 5 disks as above 1) work and 2) work out? If you had 8 disks with a huge need for space, how would y'all lay out everything? % % Phil Thanks in advance :-) :-D -- David T-G See http://justpickone.org/davidtg/email/ See http://justpickone.org/davidtg/tofu.txt