Hewlett Packard Enterprise 726825-B21 External Storage Controller

The Hewlett Packard Enterprise 726825-B21 Smart Array P441 external storage controller is a PCIe 3.0 x8 plug-in card that provides external storage management and RAID functionality for HPE ProLiant Gen8 and Gen9 servers, enabling administrators to expand and protect external SAS storage resources within enterprise environments. It features two external Mini-SAS HD (SFF-8644) ports, a 12 Gb/s SAS data path, and a 4 GB Flash-Backed Write Cache (FBWC) for cache protection, supporting RAID levels 0, 1, 5, 6, 10, 50, and 60 to balance performance, resilience, and capacity. Typical deployments include data centers, SAN environments, and backup systems where servers connect to external SAS storage enclosures to enable external storage management, scalable RAID configurations, and data protection for virtualization, databases, and other mission-critical workloads on HPE ProLiant platforms.