On 29/11/17 20:02, Reindl Harald wrote:
why not RAID5/6? besides
https://www.askdbmgt.com/why-raid5-should-be-avoided-at-all-costs.html
the parity data are additional writes wearing out the drives
So, if I have a four-drive raid 5, for every 3 blocks of data I write I
write 1 parity block. But with raid 1 or 10, for every 3 blocks of data
I write, I write *3* "parity" blocks!
What was that about "the additional writes wearing out the drives" then?
(Yes, I get the write amplification thing - but if you are writing a lot
of data, then raid 5 needs far *fewer* writes.)
Cheers,
Wol
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