I got a new M1 Macbook Air, so my old MBP is being repurposed as a home server. I shared the Time Machine drive over the network so the new Air can back up without plugging & unplugging, but this morning I get a “Time Machine couldn’t complete the backup” message, apparently because the TM drive is full.
The only thing on this drive are time machine backups, and at 5TB it should be big enough. The Home Server machine appears to have inherited the MPB’s backup history despite a complete wipe, (maybe because of a hardware ID or something). Shouldn’t TM have deleted some of the old backups from the Home Server to make space for the incoming backups from the new Air?
What should be my next step to get this working? I guess I could just format the drive and start fresh, but it feels like I shouldn’t have to.