Based on this, and on my own experiences, it looks like it's time to move on from Synology. But... to what?
I've had a DS412+ since, well, 2012. I've dutifully replaced drives as they went bad, run disk scrubs, file system scrubs, and (in the last nine years) had to occasionally run time machine restores from it. It worked like a champ each time, including "restoring" from an old computer to a brand new one. However, in the last couple of years, we couldn't get my husband's machine to back up or restore successfully, and now out of our three macs, only one is able to successfully back up at this point, and (looking at this) I'm skeptical that it's actually working.
That's not the conclusion the author came to - why is it the one you came to?
I use a Synology with a Mac nearly every day. I don't use it for Time Machine, but that's just because I use different backup strategies, like storing the files directly on the Synology, or copying them over after local editing depending on the type of file. Also, like the author learned, I check my backups periodically to make sure the file is the same on the other side.
> I'm skeptical that it's actually working
You should test it then. If you've never tested you backups, you have none.
> it looks like it's time to move on from Synology
I don’t think this is a Synology problem. No Windows users are reporting this issue. On the other hand, NAS devices have always been treated as second class citizens by Apple.
If reliable network attached storage is important to you, maybe it’s time to move on from MacOS?
As much as I hate Windows, using my NAS with it is a dream. It’s how the experience of network storage was supposed to feel.
I've had a DS412+ since, well, 2012. I've dutifully replaced drives as they went bad, run disk scrubs, file system scrubs, and (in the last nine years) had to occasionally run time machine restores from it. It worked like a champ each time, including "restoring" from an old computer to a brand new one. However, in the last couple of years, we couldn't get my husband's machine to back up or restore successfully, and now out of our three macs, only one is able to successfully back up at this point, and (looking at this) I'm skeptical that it's actually working.