I am now backing up my MacBook Air 500 Gb SSID hard drive to a 2T TimeCapsule plus a USB-connected 1T external hard drive. I want to use a commercial "storage" system for a 3rd way to backup my Mac hard drive. I am considering "iDrive". Does anyone use this system and, if not, which would be preferable? I hope this thread is in the right place. Thanks in advance!