HP A7143A RAID160 SA Controller Support Guide

RAID160 SA Controller Overview
Board Components and Features
Chapter 2 31
• Cache capacity of 256-MB with 224-MB usable cache (32 MB of the
cache is used for transfer buffer).
• Error checking and correcting (ECC) memory, providing single-bit
data correction.
Batteries
The array accelerator cache has two NiMH battery packs.
Figure 2-3 Battery Packs
If a power outage occurs, the batteries will preserve cashed data for up to
72 hours. When power is restored to the system, an initialization process
will write the preserved data to the disk drives.
The batteries are continuously recharged using a trickle-charging
process whenever the system power is on.