Ralph Strauch wrote:I think I've that sorted out now, and am back to one key per computer. I assume I can just delete the extra layer that I created unintentionally without affecting the rest of the backup
A more surgical approach would be to find the "new" volume in the other owner and simply delete that from the archive. That way, you don't have to delete any subsequent layers.
I had set the Current Encryption Limit to 2 after you suggested 1 or 2, but I'll take it down to 1 now.
Let me know how that goes, or just send another diagnostic report when you get back.
I seldom even log onto the iMac, but it looks like Qrecall could run scheduled backups of the whole iMac from my account without my being logged in. Is that correct, and should that satisfy the router's desire for a single common user? (I'm uid 501 on both machines.)
Here's the important concept:
The account on your computer is independent of the account you use on the file server. This is the concept that is most confusing when working with networked volumes. It does NOT matter what your user account is. The files written to your file server will belong to the (server) account you use to authenticate with when you connect to the server.
If you and your wife can get set up so that both of your local accounts connect to the file server using the same server account, then the files (archives) on the shared volume will belong to both of you, and it doesn't matter what your local account is or what UID you're using.
The reason I'm short on practical advice is that different file servers, NAS devices, and so on handle this differently. For example, Apple's Airport Time Capsule has (basically) two different authentication modes for its shared disk: shared and per-account. The "shared" modes allow all network users to access the files on the Time Capsule as if they were all the same user. This is the effect you need, and this is the mode I use with my Time Capsules. All QRecall users can connect to the Time Capsule and use the same archives, since (from the Time Capsule's perspective) they are all the same user. If I switched my Time Capsule to the per-account mode, I'd have the same problem you're experiencing.
Other devices handle accounts and ownership differently. Some server/NAS devices, for example, deliberately extend file ownership to the shared volume using your local account ID, effectively emulating an external drive. So YMMV and you'll need to find the magic combination that works for you.