I use my My Book Live Duo in RAID mode and created a safepoint to another external drive. After a power cut recently the Live Duo green led kept flashing with hard disks constantly running so I decided it was time to do a factory reset and do a recover. I did the factory reset, set up my RAID again and tried to restore the safepoint but then I got an error that it couldn’t do the restore because the Live Duo needed to be factory fresh! Which it was apart from the fact that I put it back in RAID mode. I tried again doing the factory reset and do recover which it started doing but it looked to me like it was just copying the files back again…Bummer.
The moral of the story then is doing Safepoints with a RAID system is a pointless exercise.