Adaptec Sata/sas Raid Controller, 4-PORT, Internal Connector, 128MB Cache, Pcie X4, Raid Supports up to 128 SAS or SATA devices (depending on server design) RAID Levels 0, 1, 10, 5, 50, JBOD Advanced data Protection Suite and 60 (Dual Drive Failure Protection) RAID Levels 1E (Striped Mirror), 5EE (Hot Space), 6