HP 655636-B21 Smart Array P721m/512 4-ports Ext Mezzanine SAS Controller

The HP Smart Array P721m Controller is a PCI-Express (PCIe) 3.0 mezzanine card supporting direct attached SAS Storage. It is one of the highest performing controllers in the HP 6Gb/s SAS portfolio and provides new levels of reliability, connectivity, and storage performance for HP Blade servers through its support of the latest SAS technology and advanced RAID capabilities. It supports up to 227 zoned direct attached SAS or SATA hard drives and ships with 512MB or 2GB Flash Backed Write Cache.