EK–SM410–UP. A01
1–1
1
Upgrading the RAID Array 410
to RAID Array 450 for Digital UNIX
This chapter describes procedures to upgrade the controller and cache modules for the Digital UNIX
platform.
This chapter describes how to upgrade the RAID Array 410 controller and cache module
in both single and dual-redundant controller configurations. Included in this upgrade are
the following:
•
Controller module
•
Cache module
•
External cache battery (ECB) and cable
•
This document
1.1
Upgrade Road Map
Replacing controller module(s) and cache module(s) involves several considerations:
•
Ensuring that your system meets the upgrade prerequisites described in Section 1.1.1
below
•
Preparing your host system for the upgrade
•
Recording RAID subsystem configuration
•
Replacing the controller(s) and cache module(s)
•
Restoring the RAID subsystem configuration
•
Upgrading the host system configuration
NOTE
You should determine the exact system configuration
that you are servicing (a nonredundant controller or
both dual-redundant controllers) before proceeding to
the following sections, as each procedure varies and
has different consequences.
