P47781-B21 HP MR416i-o Gen11 x16 Lanes 8GB OCP SPDM Storage Controller
P47781-B21 Overview
The P47781-B21 (HPE MR416i-o Gen11) is an enterprise-class tri-mode storage controller in an OCP 3.0 form factor designed for HPE ProLiant Gen11 servers. Featuring a PCIe 4.0 x8 host interface and 16 internal lanes, it simultaneously supports NVMe, SAS, and SATA drives. Equipped with an 8GB Flash-Backed Write Cache (FBWC), it handles advanced RAID arrays ($0, 1, 5, 6, 10, 50, 60$) and mixed-mode HBA operations. For infrastructure security, the controller integrates SPDM for certificate-based hardware authentication with HPE iLO 6 and Silicon Root of Trust protection.
$1,249
P47781-B21 Technical Specifications
HP MR416i-o Gen11 x16 Lanes 8GB OCP SPDM Storage Controller
Brand/Series: HPE Compute MR Gen11 (MegaRAID)
Form Factor: OCP NIC 3.0 (Modular slot)
Interfaces: PCIe Gen 4.0 x8 host lanes / x16 internal storage lanes
Cache: 8GB Flash-Backed Write Cache (FBWC)
Tri-Mode Support: 16Gbps NVMe, 12Gbps SAS, and 6Gbps SATA
RAID Support: RAID 0, 1, 5, 6, 10, 50, 60 (Supports simultaneous RAID & HBA/Pass-through)
Security: SPDM authentication via HPE iLO 6, Hardware Root of Trust, and SED support
Best For: High-performance hardware RAID, data encryption, and high-throughput enterprise workloads on HPE ProLiant Gen11 servers.
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