HP 2GB FBWC Upgrade Kit (631681-B21)
HPE 2GB Flash Backed Write Cache (FBWC) Upgrade Kit (Part Number: 631681-B21) — is a performance-enhancing module specifically designed for Smart Array P420 and P421 RAID controllers. It provides a massive 2GB buffer to accelerate write operations in data-heavy environments such as virtualization or SQL databases. The FBWC technology utilizes a high-capacity capacitor to provide power during an outage, ensuring that cached data is safely moved to non-volatile flash memory. Unlike older battery-backed units, this kit requires zero maintenance and offers indefinite data retention during power loss.
Key Specifications:
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Memory Size: 2GB.
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Protection: Flash-Backed (Capacitor-based).
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Data Retention: Indefinite (Non-volatile).
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Controller Support: Smart Array P420, P420i, P421.
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Generation: Designed for HPE ProLiant Gen8 servers.
