The 2U Intel Server System R2308SC2SHDR delivers great storage flexibility with support for up to 8 hot-swap 3.5" SATA 6G drives standard and SAS 6G with an optional Intel RAID C600 Storage activation key or a discrete controller (both available separately) and Fix 600W 80 PLUS Silver certified power supplies and support for up to five low-profile host bus adapters (HBAs) for great I/O expandability.