HP 631679-B21 RAM

HPE 1GB Flash Backed Write Cache for P-Series Smart Array (Part Number: 631679-B21) — is a memory upgrade designed to significantly enhance the performance and reliability of HPE ProLiant Gen8 storage controllers. Unlike traditional battery-backed cache, FBWC uses flash technology to backup data indefinitely in the event of a power loss. This module enables Write-Back caching, which reduces latency and increases IOPS for database and virtualization workloads. It is a critical component for any server requiring high availability and data integrity.

Key Specifications:

• Capacity: 1GB.

• Type: Flash-Backed Write Cache (FBWC).

• Compatibility: Supported on Smart Array P222, P420, and P421 controllers.

• Data Retention: Indefinite (via flash memory transfer).

• Includes: Memory module and the required power capacitor.