I am interested in using My Book Duo (in RAID-1 configuration, encrypted) for doing off-line backups of my Windows 8.1 Pro computer, i.e. switch the MBD on for doing a manual backup and switch it off again. I will be doing weekly backups, so the MBD will be off most of the time. I have been doing this with a (single) external USB HDD but I like the redundancy of MBD.
My question is: Can MBD be switched on and off while the computer is running or must the computer be switched on and off as well?