Hi I am building a 3-node Ceph cluster to storE VM disk images.
We are running Ceph Nautilus with KVM. Each node has: Xeon 4116 512GB ram per node Optane 905p NVMe disk with 980 GB Previously, I was creating four OSDs per Optane disk, and using only Optane disks for all storage. However, if I could get say 4x980GB SSDs for each node, would that improve anything? Is there a good way of using the Optane disks as a cache? (WAL?) Or what would be a good way of making use of this hardware for VM disk images? Could performance of Optane + 4x SSDs per node ever exceed that of pure Optane disks? Thanks, Victor
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