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

Upgrading the Subsystem
228 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Figure 104: Downgrade selection
A confirmation screen is displayed.
4. Enter (Y)es to the question asking whether you want to complete the
downgrade to continue with the downgrade.
5. Insert the PCMCIA card into the top controller.
6. Complete one of the following two options:
■ If in a single-controller configuration, restart the controller.
■ If in a dual-redundant configuration, repeat step 1 (on page 227) through
step 5 on the bottom controller, and then restart both controllers
simultaneously.
7. Verify that the system downgraded to the selected ACS version by entering
the following command:
SHOW THIS CONTROLLER
SHOW OTHER CONTROLLER
8. Verify that all units are available by entering the following command:
SHOW UNITS FULL
The downgrade program tests for snapshot units on the controller. If snapshot
units are found, the program displays the following message and exit.
Figure 105: Screen display indicating existing snapshots
If the host configuration expands into the new area for the enlarged host
support table, the information on those host systems is lost. The downgrade
program displays the information about those hosts and allows the
opportunity to exit before continuing.
A - Downgrade ACS version 8.8 to ACS version 8.7-1.
B - Downgrade ACS version 8.8 to ACS version 8.6-1.
Which downgrade do you want to run (A or B)?
The following snapshot units exist on this controller:
D20
D40
The controller cannot downgrade to ACS V8.6 until all snapshot
units have been deleted.
Downgrade program exiting.