HPE DL560 G11 LC 8SFF X4 NVME B2 4P DAC - P61770-B21

HPE P61770-B21 ProLiant DL560 Gen11 8SFF x4 NVMe Backplane Cable Kit

Overview

The HPE P61770-B21 is a factory-new storage connectivity kit designed specifically for the ProLiant DL560 Gen11 server platform. It provides an 8 Small Form Factor (8SFF) NVMe drive bay configuration with a four-port Direct Attach Cable (DAC) — the B2 backplane assembly that routes NVMe traffic from the drive bays to the system board. If you are expanding or replacing the NVMe storage subsystem in a DL560 G11 chassis, P61770-B21 (often searched as P61770 B21) is the HPE-qualified part for this configuration.

Key Features

• NVMe Interface: Routes storage traffic over the NVMe protocol rather than legacy SAS/SATA, which means lower latency and higher sequential throughput to the host — relevant in database, virtualization, and AI inference workloads where storage I/O is on the critical path.
• 8SFF Drive Bay Support: Accommodates up to eight Small Form Factor NVMe drives in the B2 bay position of the DL560 G11, giving dense storage expansion without consuming front-bay real estate reserved for other configurations.
• 4-Port DAC Architecture: The four-port Direct Attach Cable assembly connects backplane to controller in a single validated assembly, reducing cable-management complexity and ensuring HPE-tested signal integrity at NVMe speeds.
• DL560 Gen11 Platform-Specific: Qualified and sourced for the ProLiant DL560 G11 chassis. Using platform-matched components avoids firmware compatibility issues and keeps the server under HPE's support scope — particularly relevant if the system is under an active support agreement.

Integration & Compatibility

This kit is designed for the HPE ProLiant DL560 Gen11 server. Verify your chassis bay position (B2) and existing backplane configuration before ordering — the DL560 G11 supports multiple storage configurations and the correct kit depends on your drive-bay layout and NVMe controller assignment. For broader HPE server components and expansion options, review the full server storage accessories catalog. If you are planning NVMe storage capacity, also consider pairing with compatible NAS and storage solutions or reviewing our server infrastructure lineup for platform context.

Frequently Asked Questions

Q: What server platform is the P61770-B21 designed for?

A: The P61770-B21 is designed specifically for the HPE ProLiant DL560 Gen11 (G11) server platform. It is not a universal NVMe kit — verify chassis and bay compatibility before ordering.

Q: What interface does the P61770-B21 use?

A: The P61770-B21 uses the NVMe interface for drive connectivity, enabling lower-latency storage access compared to legacy SAS or SATA backplane designs.

Q: What does the B2 designation mean in this part number?

A: B2 refers to the backplane bay position within the DL560 Gen11 chassis. The DL560 G11 supports multiple bay configurations; B2 identifies the specific physical location and backplane assembly this kit is designed to populate.

Q: How many drives does this kit support?

A: The 8SFF designation indicates support for up to eight Small Form Factor NVMe drives in the B2 bay position.

Q: Is the P61770-B21 a genuine HPE part?

A: Yes. This is a factory-new, genuine HPE component sourced through distribution channels — no grey-market, no parallel imports.

Jerry Tildsen

The P61770-B21 is one of those platform-specific components where ordering the wrong kit is a common and costly mistake — the DL560 Gen11 supports several NVMe backplane configurations, and the NVMe interface designation here is the key differentiator from legacy SAS backplane assemblies in the same chassis family.

Technical Highlights:

• NVMe Interface: Unlike SAS backplanes, NVMe routes storage I/O directly over PCIe lanes — substantially lower latency for latency-sensitive workloads like real-time analytics or VM storage.
• 8SFF Bay Density: Eight Small Form Factor bays in the B2 position gives meaningful NVMe drive density without consuming the full front-bay allocation — useful when mixing storage tiers in the same chassis.
• 4-Port DAC Assembly: A single validated cable assembly rather than discrete cabling reduces the chance of wiring errors during maintenance and keeps signal paths within HPE's tested parameters.

Deployment Considerations:

• Confirm the B2 bay position is unoccupied and that your DL560 G11 storage controller assignment supports this backplane before purchasing — the Gen11 platform has multiple valid configurations and not all are compatible with every backplane kit.
• Evidence for this SKU is limited to distributor-level attributes; consult the HPE QuickSpecs for the DL560 Gen11 to verify controller pairing and firmware requirements before installation.

Best fit for a DL560 Gen11 deployment where the B2 bay is being provisioned for NVMe expansion — particularly in virtualization or analytics environments where PCIe-direct storage access materially affects workload performance.