At a customer I ended up having to help one department running two Synology boxes as a side project. I came in with low expectations, and still was thoroughly disappointed.

- one device died, was EOL at that point, and newer ones no longer can read the disks - stupid limits for array size. Depending on your setup adding disks can mean "copy everything off, delete arrays, and then create new ones". Also, want one 200TB array with your disks? Depending on model size you'll have to do multiple arrays instead with a bit to way lower capacity - syncing a share to another instance is broken, with pretty much no useful debug information. Already the setup is stupid (doesn't let you select which array it goes on the target machine), and then seems to change access permissions of the sync user on the target box (i.e., you can do one sync, after that you'll need to reset the access permissions). I wanted to avoid doing my own sync script, but seems I'll have to do that in the end - stupid disk compatibility warnings (which currently you can disable when you have SSH access) - wireguard only via third party addons. It's 2025. I didn't even check before if those things can do wireguard - it didn't occur to me that a device sold nowadays might not be able to do that.

While debugging I also noticed that pretty much every software component is from the stone age.