Synology DS2411+ High End Scalable NAS 12-bay NAS Solution Office to Corporate Data Centre + Series Users: (NO HDD Inc) VMware HCL Certified CPU: 1.8Hz DC, 64bit@DDR800, with floating point, Memory: 1GB Internal HDD Bays: 3.5" SATA X12 Max Internal Capacity: 36TB (12x 3TB HDD) Overall expandable capacity to 72TB with 1 x DX1211 external enclosures each with 12 x 3TB capacity External HDD Interface: USB 2.0 port X4 eSATA port X2, Lan ports x 2 Size: 270mm X 300mm X 340mm Weight: 9.93kg Volume Type: Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6,ISCSI Ready. Citrix Xenserver and VMWare Certified 3YR RTB Warranty