The HP Smart Array P400 is HP's first PCI-Express (PCIe) serial attached SCSI (SAS) RAID controller and provides new levels of performance and reliability for HP servers, through its support of the latest SCSI technology and advanced RAID capabilities. Performance . 8 internal ports of 3Gb Serial Attached SCSI (SAS). x8 PCI-Express I/O connector. 512MB and Battery-Backed Write Cache (BBWC) upgrade options. Native Command Queuing (NCQ) for increased performance on SATA drives. Reliable. Standard RAID 0,1, 1+0, 5. RAID6 support with BBWC. Recovery ROM. Flexibility. Supports SAS and SATA disk drives. SAS expander support. Ships with both low profile and full size brackets for flexible server deployment. Manageable. Online Drive Flash. Remote monitoring and configuration.