Compaq StorageWorks Getting Started RAID Array 3000 for Microsoft Windows Installation Guide (AA-RACZD-TE, January 2001)

Installing Command Console Client and Creating Your First Virtual Disk 6-13

Compaq Confidential – Need to Know Required

Writer: Bob Young Project: Getting Started RAID Array 3000 for Microsoft Windows Installation Guide Comments:

Part Number: AA-RACZD-TE File Name: g-ch6 Installing Command Console Client and Creating Your First Virtual Disk.doc Last Saved On: 12/4/00 8:26

Configuring Your RAID Array 3000 for

Dual-Controller Operation

NOTE: To configure the system for dual-controller operation, you should have a PC with

two serial ports. If your PC has only one serial port, Refer to Chapter 4 of the

“ RAID Array

3000 Controller Shelf Hardware User’s Guide

” Second Controller Option for the procedure

describing how to configure dual controllers from a single serial port.

In dual-controller operation each controller must be configured for either

Active/Active mode or Active/Passive mode.

■ In the Active/Active mode the top controller sees one host port as active,

while the bottom controller sees the other host port as active. The

controllers see their non-active host ports as passive. If one of the

controllers fails, the surviving controller sees both host ports as active.

In this way the surviving controller ensures that both host busses remain

operational. The Active/Active mode can be useful for balancing I/O

activity between controllers.

■ In the Active/Passive mode the primary controller sees both host ports

as active. The remaining controller sees both host ports as passive. If the

primary controller fails, the remaining controller takes over and sees

both host ports as active.

The Active/Active mode is the preferred mode. Do the following steps to

configure the Active/Active mode:

1. Make sure the RAID Array 3000 is turned off.

2. Install the second controller in the bottom slot. Refer to the

documentation packaged with the controller.

3. Connect the serial cable to the CTR BOTTOM connector on the back of

the RAID Array 3000 and connect the other end of the cable to one of

the PC’s available COM ports. (The top controller is usually connected

to COM1 and the bottom controller to COM2).

4. Make sure that both serial cables are connected. Serial cables must be

connected between the COM ports on the PC and CTR BOTTOM and

CTR TOP connector on the back of the RAID Array 3000.

5. Power on the system.

6. Select Command Console version 2.2 from the Start Menu, then select

HSZ22 StorageWindow.