656392-002 HPE MSA DC Power Supply

Key Product Attributes

• Model: HPE 656392-002
• Intended System: HPE MSA 2050 series
• Type: DC power supply / hot-pluggable module
• Redundancy: Supports redundant power configurations (1+1, N+1 depending on chassis)
• Form factor: Slide-in module compatible with MSA 2050 chassis bays
• Use case: Replacement part, service spare, refurbishment projects

Typical Electrical Specifications

• Input type: DC input (engineered for HPE MSA 2050 DC-ready chassis)
• Output rails: Multiple DC rails designed to feed controllers, backplanes, and fans
• Power rating: Designed to meet the MSA 2050’s documented power envelope (refer to manufacturer datasheet for nominal wattage)
• Efficiency: High-conversion efficiency to minimize waste heat and lower operating costs
• Protection features: Over-voltage protection, over-current protection, short-circuit protection, and thermal shutdown
• Operational temperature: Data center grade operating range; verify with HPE’s environmental specifications

Design Considerations

The 656392-002 module is engineered to integrate with the MSA 2050’s thermal and electrical management systems. It uses an internal intelligent controller to coordinate power-on sequencing and to communicate faults to the storage array controller for rapid notification and logging. The compact slide-in design simplifies replacement and reduces mean time to repair (MTTR).

Compatibility & Fitment — Which Systems Use This Power Supply

Compatibility is a core concern when sourcing replacement power supplies. The HPE 656392-002 is purpose-built for the MSA 2050 storage platform; it is not a generic aftermarket supply. Using manufacturer-specified modules preserves warranty status, ensures full interoperability with system firmware, and keeps management integrations intact.

Supported Chassis and Configurations

• HPE MSA 2050 2U storage enclosures (verify the chassis part number)
• MSA 2050 arrays configured for DC power input or with DC-compatible backplanes
• Redundant power setups where two or more modules share load to enable fault tolerance

Interchangeability and Alternatives

While third-party or refurbished modules may physically fit, best practices recommend using genuine HPE parts like the 656392-002 for production systems. Using authentic components reduces risk of incompatibility, communication errors, and potential damage to controllers or drives. If sourcing alternatives, confirm part numbering, firmware compatibility, and return policies.

Performance, Reliability & Redundancy

Power management plays a pivotal role in storage system reliability. The 656392-002 is built to support uninterrupted operation through:

Redundancy Strategies

• Hot-swap redundancy: Replace or add units without powering down the storage chassis.
• Load sharing: Multiple modules distribute power draw for improved longevity and lower thermal stress.
• Failover behavior: On module failure, remaining supplies take over automatically to sustain system function.

Mean Time Between Failures (MTBF) & Component Quality

HPE rates its service parts to enterprise reliability standards. The internal components — capacitors, MOSFETs, controllers — are selected for long life under continuous operation. While exact MTBF figures vary by manufacturing batch and operating environment, using manufacturer-approved spares like the 656392-002 is proven to reduce failure incidents versus non-certified alternatives.

Use Cases & Deployment Scenarios

The 656392-002 is suitable for multiple enterprise contexts:

Data Center Operations

• High-availability storage clusters requiring redundant power.
• Facilities emphasizing low PUE (Power Usage Effectiveness) and efficient cooling.

Service Providers & Colocation

• Colocation providers stocking spares for rapid replacement across multiple tenants.
• Managed service operations that need standardized parts for homogeneous fleets.