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

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Upgrading the Subsystem
172 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Note: The following steps
must
be followed carefully for the upgrade to work
properly. This procedure takes approximately 5 to 10 minutes depending upon the
complexity of the configuration. If you are upgrading from V8.6-
x
, the units involved
are briefly unavailable twice during the procedures for approximately 10 to 20
seconds in step 21 on page 178 and step 26 on page 179.
Caution: Before upgrading, verify that the subsystem is in a stable state. This
can be verified by examining the controller Reset button and the adjacent
LEDs. The Reset buttons should be flashing. All adjacent LEDs should be off
(no light). Also, verify that the controller is not reporting a lot of event
information. Issue a SHOW THIS CONTROLLER CLI command from each
involved controllers to ensure controllers are responding to CLI commands as
well. Failure to perform this verification can result in data loss or leave the
controller in an unusable state.
Note: If you have several servers with multiple LUNs in your storage area network
(SAN) and are using HP StorageWorks Secure Path Manager, HP recommends that
you verify that all units are online by using the SHOW UNITS FULL CLI command.
Afterwards, move all LUNs to the controller to be updated last by using
HP StorageWorks Secure Path Manager. (LUNs may be moved by either controller.)
Use the following procedures to perform the rolling upgrade:
1. Connect a PC or terminal to the maintenance port of controller A.
Caution: Each controller in a dual-redundant configuration should be at least
50% idle before attempting a rolling upgrade. Failure to do so can result in
jobs being dropped during the upgrade.
2. Run the Virtual Terminal Display (VTDPY) utility to verify the utilization of
each controller by entering the following:
HSGA> RUN VTDPY
The controller percent idle is the first item displayed on the second line of the
VTDPY display.
3. If the controller is less than 50% idle, reduce the processing load.