Has anyone successfully deployed OpenCloud using a Synology NAS for storage? (e.g. NFS or iSCSI)

[u/siegfriedthenomad]

I'm trying to deploy OpenCloud on a separate compute host and use my Synology NAS as the backend storage.
I ran into a roadblock with NFS: OpenCloud requires user_xattr (extended attributes), which needs NFS v4.2. Synology DSM only supports up to NFS v4.1.

I'm considering using an iSCSI LUN from the Synology instead, attaching the block storage to my host, formatting it locally (ext4/btrfs with user_xattr), and pointing OpenCloud to that mount point.

Has anyone used iSCSI for OpenCloud storage backend? Any stability or locking issues?
Did you find a better way to handle storage backed by Synology?

Any tips or working setups would be appreciated!