I provisioned a small GMK mini PC with a public, private and group relay using strfry. I just need to sure up power issues where I live. Seems to be working fine. As far as maintenance is concerned, I'm not sure of any big maintenance updates I need to do. I haven't kept up with that. I tried to set up auto updates through Linux but haven't checked to see if it has updated or if there has been any updates since deployment.

Feel free to share your full experience posting on https://nostr-proto.org/room/relays, it can be valuable to other start9 users!