We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
What else should I consider to make an educated decision?
At first what you want to do with them? Do you want blazing fast network access for video editing? Do you want to run a Plex server? Nextcloud? Synology Photos (or anything else Synology offers for sync or something else)? Or photoprism/immich or similar? And so on ...
Video/photo editing + large file storage. I'd just be interested to mount it as file system on my UNIX systems and use it just like a big drive.
Synology software and applications are way better
1522 all day. QNAP fell victim to multiple ransomware attacks in recent years. They have a lot of work to do to build back trust.
Thank you all for the advice! I went ahead and ordered the Synology!