Power outage during backup

[Sophie]

Thanks SJK.

At the prices for a UPS rated long enough to let unaccompanied backup jobs complete, times the number of Macs to protect, plus the aesthetics challenges, it becomes a question of risk. I would certainly not be putting a UPS on every Mac if it was just OSX recovering its file system.

That's why I'd really like to understand if the damage risks are higher during backup jobs than with just OSX doing its normal file system recovery. If I stand a real risk to lose both source and backup disks during a SuperDuper backup job in a form that would not be OSX recoverable then the UPS becomes mandatory ... hopefully a more informed smart decision :-)