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The original was posted on /r/proxmox by /u/Jenifer2017 on 2023-08-07 01:41:44+00:00.

I have 3 x Lenovo ThinkCentre Micro m920q’s which have a 512GB WD SN730 NVME drive installed. I installed Proxmox onto a ZFS RAID0 single drive, partitioned to use just 1/2 of the NVME. So there is like 250gb free on this NVME. I did this on all three machines.

I installed ceph on all three machines and successfully set them up as monitors. However when I go to create OSD on each node, it won’t let me select the drive, it says “No disks unused”.

I thought for sure it wouldn’t have a problem using a partition. Hrm. I don’t know what to do, I’d like to use ceph so I can make this setup High Availability.

I do have a Synology NAS but am concerned about the NAS failing. I run e.g. two DNS servers on the cluster for the local network to resolve domain names.

There is a sata connector for an internal 2.5" ssd which is unused however, I plan on putting a dual SFP+ nic in there instead of using the sata port (can’t fit both in).

Can I install proxmox onto a fast thumb drive? PNY sells one that’s like 600mb/s reads and 250mb/s writes.