CEPH Cluster 1 Disk per node

ChrisJM

Well-Known Member
Mar 12, 2018
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Hello,

Is it possible for example to run a CEPH cluster with one CEPH physical disk per node?

Also is it possible to run the proxmox OS from a USB thumb drive?
 
For you first question, yes, my lab@home is based on 3 nodes cluster with one dedicated SSD on each used as OSD.
And If you can boot on USB in legacy mode (not sure PM uses UEFI if not installed on top of Debian) and can install it with your thumb drive as target, it should work.
 
Hello,

Is it possible for example to run a CEPH cluster with one CEPH physical disk per node?
Hi,
yes... but ceph get's faster with more OSDs. If you have many nodes and fasd OSDs (SSD) it's perhaps ok.
Also is it possible to run the proxmox OS from a USB thumb drive?
This isn't recomended, because of the writes, esp. as ceph-mon-node, the drive will wearout fast and die!

Udo
 

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