CEPH Configuration verification

[ohwrd21]

Hi everyone,

I’d like to ask for some guidance regarding the minimum replica settings in Ceph.

Here’s my current setup:

• I have 3 Proxmox nodes.
• Two nodes are used as primary hosts for running VMs.
• The third node is only acting as a quorum (no VM workloads).

My question is:
Is it possible to force the Ceph minimum replica (min_size) to 1 via CLI instead of the default value of 2?

My goal is to ensure that if one of the main nodes fails during HA, the remaining node can still recover and run the VM without interruption.

I understand there may be risks involved, but I’d like to know if this setup is supported or recommended in this kind of environment.

Any insights or best practices would be greatly appreciated.

Thanks in advance!

 

[SteveITS]

Yes you can set it lower. The risk is if a drive/OSD dies any VM using it is down/data loss.