The Western Digital MyBook Studio Edition II arrived today. As I type it is in the middle of its first backup of my photographs. Had some initial difficulty getting the drive recognised with my Windows XP 64Bit operating system but all seems to be well now. I have it connected using Firewire 400 and the speed seems reasonable. I intend to connect using an eSATA connection but I am awaiting the cable from a seller on eBay. My setup is RAID 1 which means that the data will be copied to each 1TB disc in the unit thereby giving me 2 copies of all data. In the event of a single drive failure I would still have a full copy of my data available.