Base 12 SFF-3 Bays/RDX Bay – Split feature to 6+6 SFF Bays: Add a second SAS Controller – Expanded Function 18 SFF-3 Bays/Dual IOA with Write Cache and optional external SAS port – Expanded Function 12 SFF-3 Bays/RDX Bay and optional external SAS port https://serversrent.com/