HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Maintenance and Service Guide (EK-G80MS-SA. C01, March 2005)

Upgrading the Subsystem

170 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software

Maintenance and Service Guide

Before upgrading, determine which version of ACS is currently in use (by issuing

a SHOW THIS CONTROLLER and SHOW OTHER CONTROLLER command, as

applicable, from a CLI prompt), and then determine which upgrade method to use:

■ Rolling Upgrade—This method allows I/O activity to continue during the

upgrade by using the failover capabilities of the controllers. Only one

controller at a time is shut down to perform the upgrade, allowing the host

system full access to the disk devices during the upgrade with minimal impact

to the host systems.

Note: Rolling upgrades between different ACS variants are not supported in Microsoft

Windows. If you need to upgrade from one variant of ACS to another, you must

perform a shutdown upgrade and reboot the controller.

Caution: IBM AIX users must use shutdown upgrade procedures only. Rolling

upgrades are not recommended on IBM AIX platforms.

Caution: If you are upgrading to ACS 8.8-

P (HP StorageWorks Data

Replication Manager), note the following guidelines:

■ Ensure that the latest drivers and that SecurePath V3.0A (Service Pack 1)

or SecurePath V3.0B (Service Pack 1) are installed before upgrading.

■ Complete a shutdown upgrade if you are running Windows NT,

Windows 2000, or IBM AIX. Rolling upgrades are not supported on

these platforms.

Failure to follow these guidelines can result in undesirable controller upgrade

issues.

■ Shutdown Upgrade—This method requires the halting of I/O activity to the

controllers during the upgrade. Both controllers are shut down during the

upgrade procedure. Units are not available to the host system during this time.

Before upgrading the controller software, dismount units on the host system

or shut down the host system.

After determining the upgrade method, carefully follow the appropriate

procedure.