 The XIV Gen3 model offers 2, 3, 4 or 6 TB drives, providing up to 485 TB of usable capacity per rack.SSD caching (available as an option) adds up to 12 TB of management-free high-performance data caching capability to the entire array.The system can also connect to external storage via Fibre Channel (8Gbit/s) and iSCSi (1 or 10 Gbit/s).