On Tue, Jul 16, 2019 at 5:43 PM Stolte, Felix <f.stolte@xxxxxxxxxxxxx> wrote:
They told us, that "best practices" for ceph would be to deploy disks as Raid 0 consisting of one disk using a raid controller with a big writeback cache.
Since this "best practice" is new to me, I would like to hear your opinion on this topic.
We've got a few clusters running like that, usually because raid controllers not supporting anything else.
Sometimes the raid controller caches help with performance in specific use cases, but they can also hurt performance by doing stupid things.
But best practice would be to just use them in jbod mode or pass-through mode.
Paul
Regards Felix
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