External Hard Drives for Photos with iPad Pro desk setup

I am an M1 iPad Pro 12.9 first user. Even more so now with external display support.

We currently have an aging Synology NAS(8 yrs old) with about 2TB currently being used. We use the NAS for mainly photo backups, but we also use iCloud family share for photos. I am thinking thru options I could use to replace the NAS just for the storage while using an iPad Pro. I would most likely attach said drive(s) to the studio display.

I realize that I could continue with the NAS or newer version as it is web based, but not sure that I really need the NAS for our purposes.

What are others using for an iPad Pro first setup for drive storage or backups?