I have heard of so many issues with AirDisk (USB drives on AEBS), but I have also heard that some people have had some success with certain drives. Does anybody have a working setup and can they please state what drive they are using? I am especially interested in RAID 1 configurations that are known to work. I am thinking of time Capsule but don't like the idea of a non-replaceable internal drive with no redundancy. I am not necessarily concerned with TM backups, although that would be a nice plus if it worked.