I’m using ceph on my proxmox cluster but only for the server data, all my jellyfin media goes into a separate NAS using NFS as it doesn’t really need the high availability and everything else that comes with ceph.

It’s been working great, You can set everything up through the Proxmox GUI and it’ll show up as any other storage for the VMs. You need enterprise grade NVMEs for it though or it’ll chew through them in no time. Also a separate network connection for ceph traffic if you’re moving a lot of data.

Very happy with this setup.

Have you looked at this?:

https://haxxnet.github.io/Compose-Examples/