405148-B21 HP 512MB Battery Backed Write Cache Upgrade

405148-B21 Overview

The HP 512MB Battery Backed Write Cache Upgrade is an add-on for the HP Smart Array P400 storage controller. This upgrade improves the performance and reliability of the storage system by providing battery-backed write caching. The write cache is a type of memory that temporarily stores data before it is written to the disk. The battery backup ensures that the data in the write cache is not lost in case of a power failure or system crash.