I have a QNAP TS-219 running Version 4.12 (newest). I have two Macs:
- Mac mini
- MacBook Air
Both run Yosemite 10.10.2. Both do a Time Machine backup to QNAP which works fine, as long as only ONE machine uses the TMBackup share, no matter which one. As soon as the other did a backup, both complain with the error message, that it has to recreate the whole backup (sorry, I am not at ...