WD  My Book World Edition II - 2 TB (2 x 1 TB) Network Attached Storage WD Anywhere Access storage system and all the files on it are always accessible when you need them Easy to set up, easy to use. Wizard software steps you through RAID configuration. Data OnHand - From any PC, use Windows Explorer to securely browse, edit and save files on My Book World Edition. Extra data protection with RAID 1 Up to 2 TBs of storage in an elegant, small footprint design, enough to store an entire digital photo library