Could performance of Optane + 4x SSDs per node ever exceed that of
pure Optane disks?
No. With Ceph, the results for Optane and just for good server SSDs
are
almost the same. One thing is that you can run more OSDs per an Optane
than per a usual SSD. However, the latency you get from both is
>> Could performance of Optane + 4x SSDs per node ever exceed that of
>> pure Optane disks?
>
> No. With Ceph, the results for Optane and just for good server SSDs are
> almost the same. One thing is that you can run more OSDs per an Optane
> than per a usual SSD. However, the latency you get from
Could performance of Optane + 4x SSDs per node ever exceed that of
pure Optane disks?
No. With Ceph, the results for Optane and just for good server SSDs are
almost the same. One thing is that you can run more OSDs per an Optane
than per a usual SSD. However, the latency you get from both is
The problem with caching is that if the performance delta between the
two storage types isn't large enough, the cost of the caching
algorithms and the complexity of managing everything outweigh the
performance gains.
With Optanes vs. SSDs, the main thing to consider is how busy the
devices are in
On 11/08/2019 19:46, Victor Hooi wrote:
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
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
