Compaq 3000 manual Second Controller Option, Introduction

4

Second Controller Option

This chapter describes how to install a second RAID controller in the RAID Array 3000 Con- troller Shelf. The second controller option adds a fail/safe feature to your storage subsystem. The chapter also contains a procedure describing how to configure the subsystem for dual- controller operation when only one serial port is available on the host.

4.1Introduction

The controller option adds a second (redundant) controller unit to your subsystem to preserve the integrity of data should the first controller malfunction. The second con- troller is installed directly below the existing controller in the bottom controller slot of the RAID Array 3000 controller shelf.

The installation procedure consists of adding two SIMM memory modules to the re- dundant controller and, depending on the option kit you are installing (see inventory below), one or two SIMM modules to the existing controller. Following the memory upgrade, you must upgrade the firmware in both controllers , seat the devices in their respective controller slots and configure the subsystem to accommodate a redundant controller.

Perform an inventory of the items contained in the second controller kit option. The kit should contain the following:

RAID Array 3000 Controller

For option kit DS-HSZ22-AA, 3 SIMMs For option kits DS-HSZ22-AB, 4 SIMMs CD with new Firmware

Model Label Warranty Card This Guide

EK–SMCPQ–UG. C01 4-1