Is Netgear ReadyNAS Duo a good idea to use Time Machine or External HD? I currently use a Seagate Backup Plus as the Time Machine. I only used 20GBs so far on it. Thinking of moving it to the ReadyNAS. My iTunes Music and Library is stored on the ReadyNAS Media folder. If i play music from iTunes and backup time machine schedules backup. My ReadyNAS is setup as a power up and down timer. It normally starts up at 5pm after I finished work and shuts down at 9.45pm when i go to bed. I wonder if it powers down at 9.45pm and am still on the computer, my backup will fail would that cause any major problems. Can i use both as Time Machine? so when my ReadyNAS is off it kicks onto the External HD?