[ceph-users] Re: Best practice and expected benefits of using separate WAL and DB devices with Bluestore

On Apr 23, 2024, at 12:24, Maged Mokhtar <mmokhtar@petasan.org> wrote:

For nvme:HDD ratio, yes you can go for 1:10, or if you have extra slots you can use 1:5 using smaller capacity/cheaper nvmes, this will reduce the impact of nvme failures.

On occasion I've seen a suggestion to mirror the fast devices and use LVM slices for each OSD. This might result in increased wear.