Up until a couple of weeks I was running it on a dedicated Pi4. It’s now running as a VM in ProxMox on a Lenovo M710q I got off ebay for £40. I did load it up with RAM, upgrade the CPU and add another NIC so it probably came in at more like the cost of a 16Gb Pi5 but I’m super happy with it.

It’s now running as a VM in ProxMox on a pair of Lenovo M710q mini PCs

So, have you got High Availability setup? If so, I’d like to know more about that part…

So my plan had been to set up a pair of ProxMox hosts, use Ceph to do the shared storage and use HA so VMs could magically move around if a host died. However, I discovered Ceph and HA need a minimum of 3 hosts. HA can be done if you set up a Pi or some other 3rd host that can act as the 3rd vote in the event of a failure but as I didn’t have Ceph I’ve not bothered trying.

I’ve read Ceph can work on 2 but not well or reliably.

I might setup a 3rd host some day but it seems a bit of a waste as I just don’t need that amount of resources for what I’m running.

And I should have known really, I’ve a bit of a background in VMware, albeit at the enterprise level so I’ve never had to even think about 2 or 3 node clusters.

You can do HA in Proxmox with ZFS replication instead of Ceph. Third device something else as you said. It’s what I’m doing.