HPE 462968-B21 – 256MB Smart Array Cache Module
Key Features
- 256MB DDR2 Smart Array cache memory
- Improves RAID write-back performance
- Battery-backed data protection support
- Compatible with P-series controllers
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HPE 462968-B21 – 256MB Smart Array Cache Module
Overview
The HPE 462968-B21 is a 256MB Smart Array cache module designed for HPE ProLiant servers using P-series RAID controllers. It functions as a battery-backed write cache (BBWC) or cache memory upgrade that improves RAID write performance and protects cached data during power loss.
It is used in enterprise storage controller environments where write-back caching is enabled to accelerate disk I/O operations. The module temporarily stores write data to improve performance before committing it to physical drives.
This component is installed directly into compatible Smart Array RAID controllers in ProLiant Gen5 to Gen7 server platforms. It is widely deployed in legacy enterprise infrastructures that still rely on P-series RAID architectures.
It ensures data integrity and improved storage efficiency in server systems where consistent disk performance and cache protection are required.
Typical Deployment Scenarios
Used in HPE ProLiant servers running Smart Array P-series RAID controllers in enterprise environments. Common in legacy virtualization clusters, database servers, and storage systems requiring write-back cache acceleration. Also used in maintenance or upgrade of existing Gen5–Gen7 server infrastructure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | HPE |
| Part Number | 462968-B21 |
| Product Type | Smart Array Cache Module |
| Cache Capacity | 256MB |
| Memory Technology | DDR2 SDRAM |
| Controller Type | P-series RAID controller cache |
| Function | Write-back cache acceleration |
| Backup Type | Battery-backed cache (BBWC) |
| Server Platform | HPE ProLiant Gen5–Gen7 |
| Interface Type | Plug-in controller module |
| Data Protection | Cache retention during power loss |
| Form Factor | Controller-mounted module |
| Compatibility | HPE Smart Array P212 / P410 series |
| Operating Role | RAID write cache optimization |
| Use Case | Enterprise storage performance boost |
Compatibility / Ecosystem
Compatible with HPE Smart Array P-series RAID controllers used in ProLiant Gen5, Gen6, and Gen7 servers. Designed for legacy enterprise storage systems requiring cache acceleration and write-back data protection.
Additional information
| Weight | 0.009 kg |
|---|---|
| Dimensions | 15.0 × 10.4 × 1.3 cm |
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