Hello. We're running 1000vm on 28 node with 6 ssd (no seperate db device) and these vms are Mostly win10. 2 lvm osd Per 4tb device total 288osd and one RBD pool with 8192 PG. Replication 3. Ceph version : nautilus 14.2.16 I'm looking for all flash RBD tuning. This is good test env and tomorrow gonna be prod. In vms I see 1800mb/s read and 900mb/s write (qemu = write back) With good tuning I believe this cluster will go further. Do you have any special suggestion? Have a nice weekend.