Am 12.06.24 um 02:14 schrieb Paul E Luse:
On Wed, 12 Jun 2024 01:04:18 +0200
Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote:
Am 11.06.24 um 20:31 schrieb Piergiorgio Sartor:
I'm setting up a system with 2 SSD M.2 (NVME).
I was wondering if would it be better, performace
wise, to have a RAID-10 near layout or a RAID-1.
Looking around I found only one benchmark:
https://strugglers.net/~andy/blog/2019/06/02/exploring-different-linux-raid-10-layouts-with-unbalanced-devices/
Which uses mixed SSD, NVME and SATA.
Does anybody have any suggestions, links, or
ideas on the topic?
BTW, practically speaking, what's the difference,
between the two RAIDs?
i wouldn't even consider a RAID10 with two disks, especially with SSD
and practically you end with a unsupported RAID1 because there are no
stripes with 2 disks
I don't disagree but I would recommend you try each variation and
measure the performance for yourself. It's a great learning experience
if you haven't done it before and there's nothing like trusting your
own data over on your own system/config something that someone else has
done when there are so many factors that can affect performance.
the problem with benchmarks is that they often don't reflect mixed,
real-world performance - for virtual machine workload the "far" layout
wins in case of HDD
with NVME RAID i pretend it don't matter enough to even waste your time
