Hewlett Packard Enterprise 726821-B21 RAID Controller

The Hewlett Packard Enterprise 726821-B21 is the HPE Smart Array P440 RAID controller (MPN 726821-B21 / 749797-001) designed for enterprise servers to manage and optimize internal storage through RAID functionality and 12Gb/s SAS connectivity; it is the P440 series card commonly deployed in HPE ProLiant Gen9 systems and is the upgrade path for high-demand storage configurations. This PCIe 3.0 x8 plug-in card features 4GB flash-backed write cache (FBWC) for cache protection, a single internal SAS port with 8 lanes, and data transfer rates up to 12Gb/s, supporting RAID levels 0, 1, 5, 6, 10, 50, and 60 to balance performance and redundancy in databases, virtualization, and large-scale storage arrays. Managed through HPE Smart Storage Administrator (SSA), the controller is designed for enterprise servers and data center storage environments requiring storage upgrades, RAID configuration, performance optimization, and data integrity; common replacements include the HPE Smart Array P441 and P840 controllers and the Dell PERC H730.