On Tue, Jun 11, 2024 at 05:14:33PM -0700, Paul E Luse wrote: > 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. > > -Paul > Hi, thanks to you as well. About benchmarking, you're absolutely right, I did in the past for other RAIDs (-5, -6 and -10). I was just hoping to skip it, this time... :-) I do not have really a performance problem to solve. I'm just curious, given that the two RAIDs seem identical, if someone already tested the two. Thanks, bye, -- piergiorgio
