HP 655636-B21 Controller

HPE Smart Array P721m Mezzanine SAS Controller (Part Number: 655636-B21) — is a PCIe 3.0 mezzanine card specifically designed for HPE ProLiant Gen8 blade servers. It provides advanced RAID functionality and high-speed connectivity to external SAS storage solutions such as D2000 and D6000 disk enclosures. Featuring the HPE SSD Smart Path technology, it significantly reduces latency and improves read performance for SSDs. With support for up to 227 drives and advanced data protection features like RAID 6, the P721m is a robust choice for enterprise-level virtualization and data-intensive workloads within a BladeSystem environment.

Key Specifications:

• Data Transfer Rate: 6Gb/s SAS per lane.

• Interface: PCIe 3.0 x8 (Mezzanine Type B).

• Cache: 512MB or 2GB Flash-Backed Write Cache (FBWC) options.

• Storage Support: Direct connect to external SAS storage via SAS BL switches.

• Advanced Features: RAID 6/60, Dual Domain, SSD Smart Path.

• Compatibility: HPE ProLiant Gen8 Blade Servers.