Am 02.12.2017 um 14:19 schrieb Nix:
On 1 Dec 2017, Reindl Harald said:
RAID5 has *zero* benefits against RAID10 except costs while RAID6 is
terrible for performance and wear out of disks
You still haven't explained why RAID-6 wears out disks more than RAID-10
does.
what about common sense?
double parity anyone?
a write goes at least to 3 disks of the array instead two in case of a 4
meber RAID10
RAID-5 has one huge benefit over RAID-10: more accessible storage for a
given number of disks, and, given that power is not free, that means
lower running costs as well, as well as lower noise, lower vibration,
lower maintenance costs (since having more disks does mean you have to
replace disks more often, even if the chance of losing data when one
fails is reduced by RAID).
the more accessible storage is the only real one
If RAID-5 and RAID-6 had no benefits at all over RAID-10 it is unlikely
they would still be in wide use. They are, even for new installations,
because they truly do offer benefits for some use cases. They may not
for yours, but that doesn't mean they don't for anyone
yes, when you need far more than 8 TB...
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