HPE P47789-B21 MR216I-O Storage Controller

The HPE P47789-B21 is the HPE MR216i-o storage controller, an OCP form factor host bus adapter designed for HPE ProLiant Gen10 Plus and Gen11 servers. Built on Broadcom MegaRAID technology, the MR216i-o provides high-lane-count internal connectivity for SAS, SATA, and NVMe drives, making it a flexible foundation for software-defined storage, virtualisation hosts, and high-throughput data workloads that do not require hardware write-back cache.

Server architects specify the P47789-B21 where drive flexibility and PCIe efficiency matter. Its OCP slot placement keeps standard PCIe slots free for GPUs, network adapters, and accelerators, an increasingly important consideration in dense Gen11 configurations. Tri-mode support means a single controller can address traditional SAS and SATA media alongside NVMe devices, simplifying design across mixed drive bays and future-proofing configurations as estates shift towards flash.

For UK IT teams, the challenge with current-generation options like the MR216i-o is often lead time and cost through standard channels. Euroland IT Store, a trusted UK supplier of new and refurbished HPE hardware and server components, stocks the P47789-B21 in both conditions, with every unit tested before dispatch and covered by warranty. That makes this controller accessible for new server builds, upgrades to existing ProLiant Gen10 Plus and Gen11 machines, and like-for-like replacement of failed controllers in production systems.

Typical use cases include vSAN and Storage Spaces Direct nodes where the operating system manages resilience, database servers using NVMe media, and general-purpose virtualisation hosts needing dependable drive connectivity. Whether you are building out a cluster, standardising controllers across a fleet, or urgently replacing a faulty adapter, the P47789-B21 MR216i-o offers current-generation capability at competitive pricing. Contact our team for stock confirmation, volume quotes, and configuration advice.

Key Features

• Genuine HPE part, SKU P47789-B21
• HPE MR216i-o controller based on Broadcom MegaRAID technology
• OCP form factor preserves PCIe slots for other adapters
• Tri-mode support for SAS, SATA, and NVMe drives
• High internal lane count for dense drive connectivity
• Designed for HPE ProLiant Gen10 Plus and Gen11 servers
• Well suited to software-defined storage such as vSAN and S2D
• Cache-less design ideal for pass-through and HBA-style workloads
• Available new and refurbished, tested before dispatch
• Managed through standard HPE server tooling and firmware

Compatibility

• Designed for HPE ProLiant Gen10 Plus and Gen11 servers with a compatible OCP controller slot
• Includes selected HPE ProLiant Gen11 configurations such as DL and ML series models
• Compatibility depends on server model, backplane, and cabling configuration
• We recommend confirming your exact server SKU and drive layout with our team before ordering

Benefits

The MR216i-o brings current-generation storage flexibility without locking you into a single media type. Supporting SAS, SATA, and NVMe from one controller simplifies procurement, reduces spares diversity, and lets you refresh drive technology within the same server chassis. Its OCP placement protects precious PCIe slots, which keeps expansion options open across the server’s life. Buyers who need hardware RAID performance with onboard cache should consider the HPE P58335-B21 MR408i-o Gen11 storage controller instead, and many Gen11 builds pair this data controller with the HPE P48183-B21 NS204i-u NVMe boot device for resilient OS boot.

For organisations running software-defined storage, the P47789-B21 is a natural fit: resilience is handled in software, so the controller’s efficient pass-through connectivity is exactly what platforms like vSAN and Storage Spaces Direct recommend. As a replacement part, a like-for-like swap restores a failed node to the cluster quickly, protecting overall resilience and rebuild timelines. Sourcing from Euroland IT Store adds practical value: refurbished units cut costs on multi-node deployments where controller count multiplies quickly, new units satisfy strict procurement requirements, and tested, warranted stock held in the UK shortens both project and repair timescales. Our full range of RAID controllers makes standardising server storage affordable at fleet scale.

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