HPE P28586-B21 256GB DDR5 4800MHz RDIMM
Key Features :
• 256GB DDR5 registered ECC server memory
• 4800 MT/s speed for high-bandwidth workloads
• RDIMM design for multi-channel server memory
• ECC support for data integrity and reliability
• Compatible with HPE ProLiant Gen11 platforms
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HPE P28586-B21 256GB DDR5 4800MHz RDIMM – In Dubai
Overview :
The HPE P28586-B21 is a 256GB DDR5 registered DIMM (RDIMM) designed for maximum memory capacity in HPE ProLiant Gen11 servers. It is deployed by data center engineers and IT administrators to support highly memory-intensive workloads, including large-scale virtualization, in-memory databases, and analytics platforms where maximizing RAM per server node is essential.
Operating at 4800 MT/s, this module provides high memory bandwidth while utilizing ECC (Error-Correcting Code) to detect and correct errors in real time, ensuring data integrity in mission-critical environments. The registered DIMM architecture buffers command and address signals, reducing electrical load on the memory controller and allowing stable operation with multiple high-capacity DIMMs installed.
This module is intended for deployment in rack and tower servers in enterprise data centers, private clouds, and high-density computing clusters. It is ideal for memory-bound workloads such as virtual machine hosting, large in-memory database instances, and analytics workloads requiring consistent and reliable memory performance.
Integration aligns with HPE SmartMemory validation, ensuring full compatibility with supported ProLiant Gen11 platforms. The module supports multi-channel memory configurations and optimized memory population to maintain throughput and stability under sustained high-load conditions.
In practical deployments, the P28586-B21 allows organizations to expand server memory capacity significantly, enabling higher virtual machine density, improved application performance, and better utilization of existing hardware without adding servers. It is not suitable for desktop PCs or non-ECC DDR5 systems.
Typical Deployment Scenarios :
• Virtualization clusters with very high RAM requirements
• In-memory databases such as SAP HANA environments
• Enterprise analytics and HPC workloads
• HPE ProLiant server high-capacity memory expansion
• Private cloud platforms optimizing node density
Technical Specifications :
| Specification | Details |
|---|---|
| Brand | HPE |
| Part Number | P28586-B21 |
| Product Type | Server Memory (RDIMM) |
| Capacity | 256GB |
| Memory Type | DDR5 |
| Speed | 4800 MT/s |
| Form Factor | 288-pin RDIMM |
| Error Correction | ECC |
| Rank | Dual Rank |
| Voltage | 1.1V |
| Signal Processing | Registered |
| Compatibility | HPE ProLiant Gen11 |
| DIMM Type | Registered DIMM |
| Use Case | Server |
| Weight | ~0.1 lb |
Compatibility / Ecosystem :
• Compatible with HPE ProLiant Gen11 servers
• Supports multi-channel DDR5 memory configurations
• ECC-enabled for enterprise server stability
• Integrates with HPE SmartMemory DDR5 validated systems
Additional information
| Weight | 0.50 kg |
|---|---|
| Dimensions | 13.97 × 22.23 × 14.61 cm |
| Brand | HPE |







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