HP Inc. Smart Array 2GB FBWC Gen8 - 2GB DDR3/FSB

HP Inc. Smart Array 2GB FBWC Gen8 - 2GB DDR3/FSB (MPN 631681-B21-RFB) is a server memory module designed to expand cache capacity for HP Smart Array controllers in Gen8-series servers. This 2GB FBWC (Flash-Backed Write Cache) DDR3 module increases temporary storage for write operations, improving throughput and data consistency when the controller coordinates disk or SSD arrays. The module is compatible with systems that support HP Smart Array Gen8 architecture and is intended for use in server environments where improved write performance and protection against data loss during power events are required.

Advantages

The HP Smart Array 2GB FBWC Gen8 provides a compact, reliable way to add non-volatile cache capacity, helping to reduce write latency and smooth sustained I/O workloads. Its FBWC design stores cached writes to flash if power is lost, preserving data integrity until normal operation resumes. The 2GB capacity is suitable for mid-range arrays and supports controller features such as battery/flash-backed cache and RAID optimizations. The module follows HP compatibility and sizing guidelines for Gen8 controllers, offering a factory-grade, serviceable part with the indicated MPN 631681-B21-RFB.

Suitable for

• Gen8 HP ProLiant servers with Smart Array controllers that accept FBWC modules
• RAID configurations requiring additional non-volatile write cache
• Database and virtualization workloads with moderate write-intensive operations
• Environments needing improved write performance and protection against power interruptions

Key specifications

• Brand: HP
• Model: Smart Array 2GB FBWC Gen8
• Capacity: 2GB (DDR3)
• Type: Flash-Backed Write Cache (FBWC)
• Compatible series: HP Smart Array Gen8 controllers
• Manufacturer part number (MPN): 631681-B21-RFB
• Use case: Server cache expansion for RAID controllers

How to use

Install the FBWC module according to the HP Smart Array controller installation procedure for Gen8 hardware. Power down the server or follow hot-swap instructions if your system supports safe insertion and removal; consult the server maintenance manual for exact steps. Insert the module into the controller’s designated cache connector and secure it per HP’s guidelines. After physical installation, verify that the controller firmware recognizes the new cache capacity and that the controller’s write-cache settings are configured to use FBWC. Run a controller diagnostic or check management software (such as HP Array Configuration Utility or iLO-integrated tools) to confirm successful installation and operation.

Usage recommendations

Use the HP Smart Array 2GB FBWC Gen8 module in systems with compatible Gen8 controllers and up-to-date firmware. Prioritize firmware updates and follow HP service documentation for battery/flash maintenance cycles. For production environments, test changes in a maintenance window and monitor controller logs after installation to ensure cache health and correct operation.