Hi,
Dell Powervault MD3000 - Product Line: PowerVault, Product Type: Rackmount Storage, Form Factor: 3U Rackmount, Hard Drives: Up to 15x 3.5" SAS/SATA hot-pluggable hard drives, Maximum Internal Storage: Up to 30TB, Adapter: PERC 5/E 256MB BBWC, Expansion: Expands to three shelves with two PowerVault MD1000 expansion arrays.