The HP Smart Array P212 is HP's entry level PCI Express (PCIe) Serial Attached SCSI (SAS) RAID controller. The Low Profile, Half Height card has 8 ports & utilizes DDR2-266 memory. The P212 is ideal for RAID 0/1, 1+0 & can be upgraded with the 256MB battery-backed write cache (BBWC) module for RAID 5, 5+0. Entry Level Performance. 4 internal ports/4 external ports of 3 Gb Serial Attached SCSI (SAS). x 8 PCI-Express I/O connector. DDR-2/266 memory. 256MB, & Battery-Backed Write Cache (BBWC) upgrade option. Reliable. Standard RAID 0, 1, 1+0. RAID 5, 5+0 support with 256MB Cache. Flexible. Supports SAS & SATA disk drives. Manageable. Online Drive Flash. Remote monitoring & configuration. Mirror Splitting & recombining.