HP A7143A RAID160 SA Controller Support Guide

RAID160 SA Controller Overview
Board Components and Features
Chapter 2 35
ROM image. When you upgrade the ROM, the inactive image (the
one not being used by the system) is upgraded. There is not normally
any noticeable difference in operation. When you use Recovery ROM
for the first time, however, both ROM images are upgraded, causing
a boot delay of about 60 seconds.