657167-001 HPE MSA DC Power Supply

HPE 657167-001

The HPE 657167-001 is the referenced DC power component associated with the HPE MSA 2050 storage family. This power assembly (often sold or listed as a "SPS-CORD POWER DC WITH GROUND" or a DC power module/cord for the MSA 2050 enclosure) is part of the power delivery system that keeps MSA arrays stable, redundant, and ready for production workloads. The item is commonly stocked as a spare part, replacement module, or accessory for technicians maintaining HPE MSA 2050 SAN arrays. 

Compatibility and Target Systems

The 657167-001 is intended for use with HPE MSA 2050 storage arrays and related disk enclosures (SFF and LFF variations). It is typically paired with the MSA 2050 dual-controller chassis and enclosure models that rely on DC power input or DC power carriers. Administrators consider this part when they need an OEM-approved power cord/module to preserve warranty alignment and system reliability.

Key Compatibility Notes

• Designed for HPE MSA 2050 SAN Storage models (SFF/LFF variants).
• Often sold as an SPS (spare part) or replacement cord with ground for DC setups.
• Works in multi-enclosure deployments where DC power carriers and redundant PSUs are used.

Technical Specifications — Electrical and Mechanical

Understanding the electrical envelope for the MSA 2050 power architecture is essential. The MSA 2050 platform is designed to support DC-power configurations in carrier-grade and certain telecom/edge environments. HPE QuickSpecs and datasheets indicate the DC power carriers and power supplies for the MSA 2050 are built to operate across a wide DC input range to accommodate typical telco and datacenter −48V environments. Specifically, the MSA 2050 DC power supplies are engineered to operate over the input range of -40 VDC to -75 VDC, which is common for DC-powered infrastructure. 

For AC-powered variants of the MSA 2050 (where AC PSUs are used instead of DC carriers), HPE documentation lists typical running input figures such as 110 V AC at ~3.32 A (344–390 W) and 220 V AC at ~1.61 A (374–432 W), with maximum input power ranges covering 100–240 VAC. These values are useful when planning rack power, breakers, and PDUs for mixed-power or conversion scenarios. 

Practical Mechanical Details

• Form factor: cable/module designed to mate with the MSA 2050 power carrier inlet.
• Grounding: includes a ground conductor and meets HPE's spare-part grounding requirements.
• Condition options: commonly available as new, refurb, or used — many vendors list both NOS and refurbished stock. 

The Accurate Power Parts Matter for Storage Arrays

Storage arrays are sensitive to power quality and redundancy. Incorrect or undocumented power components can lead to unpredictable behavior, degraded performance, or even data risk. Using OEM-approved elements such as the 657167-001 helps ensure:

• Proper grounding and surge handling.
• Compatibility with controller firmware and power-fail logic.
• The ability to maintain dual-redundant power paths in production environments.

Redundancy and Failover

MSA 2050 arrays are designed with redundant power in mind. Typical deployments include two power supplies or power carriers, so if one supply or cord fails, the other continues to feed the array and prevents downtime. When you replace a single PS or cord, choosing the correct part number (657167-001) preserves that redundant design and avoids mismatches.

Operational Best Practices

• Always keep a matched replacement on-hand to minimize Mean Time To Repair (MTTR).
• Confirm voltage domain (AC vs DC) before ordering — the 657167-001 refers to DC cord/carrier items in HPE listings.
• Label and document the replacement date and serials for audit and warranty tracking.

Vendor Selection Checklist

• Confirm exact part number (657167-001) and match to your MSA 2050 chassis variant.
• Ask for compatibility confirmation with HPE model and firmware level.
• Check warranty length and return policy on refurbished or used units.
• Prefer vendors offering test reports or burn-in validation when buying used items.

Performance, Efficiency, and Environmental Factors

Power modules and DC carriers for enterprise storage must balance efficiency with resilience. While the 657167-001 is a cable/cord-specific spare rather than the entire AC PSU, its design contributes to overall system efficiency by ensuring low-resistance connections and proper grounding. HPE QuickSpecs for MSA 2050 provide the platform's power envelopes, thermal dissipation guidelines, and recommended ambient operating ranges — essential data points for planning capacity and cooling.

Data Center Planning Considerations

• Account for the MSA 2050’s typical running power when planning rack power and cooling (see QuickSpecs figures for AC variants and DC envelope for DC variants).
• Plan for PDUs and breakers that support the array’s steady-state draw plus headroom for peak events.
• Keep spare 657167-001 items in inventory for high-availability environments to reduce downtime risk.