631681-B21 HP 2-GB P-series Smart Array FBWC Module Price: $95.95
631681-B21 HP 2-GB P-series Smart Array FBWC Module
Description: HP 2GB P-series Smart Array Flash Backed Write Cache Kit (Includes FBWC and Capacitor Module)
Option Part# 631681-B21
Capacitor module only is
Spare Part# 587324-001
The Flash Backed Write Cache (FBWC) uses NAND 6 flash devices to retain cache data and super-capacitors (super-caps) instead of batteries to provide power during a power loss. The FBWC offers significant advantages over the HP Battery-Backed Write-Cache (BBWC) system. Since the FBWC writes the contents of memory to flash devices - there is no longer a 48-hour battery life limitation and the data will be posted to the disk drive on the next power up.