14 Oct
2022
14 Oct
'22
3:39 p.m.
Hi,
It does. Backups are the customer's responsibility :-}
I've not considered single parity raid to be risky - what do
other people think?
Do you have a hardware controller with non-volatile / battery backed cache
memory?
Traditionally, that's been the only way to avoid the "RAID-5 write hole"
(where you only write a portion of the stripe before a power failure,
creating an undetectable data error).
In other news, I've just bought a pair of 18TB (wow!!! formatted capacity
inexcess of 16TiB!) enterprise Toshiba drives and they boast their own,
integrated, non-volatile cache that seem to also be suitable for use in a
RAID-5 array.
Best wishes,
@ndy
--
andyjpb(a)ashurst.eu.org
http://www.ashurst.eu.org/
0x7EBA75FF
[1] In particular one can rent a second-hand server
that's
already got 4 x 6TB disks (which I mount as RAID, obvs.)
If you’re squeezing 16TB of storage out of 24TB raw, it
implies the use of single parity RAID. I hope you’ve got good
backups :)