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

Upgrading the Subsystem
174 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
8. If upgrading from ACS V8.6-xS or 8.7-xS, delete all Snapshot units:
a. Identify all Snapshot units by entering the following command:
HSGA> SHOW UNITS FULL
b. Record the configuration for each Snapshot unit for restoration in step 34
on page 181.
c. Individually delete all Snapshot units by entering the following
command:
HSGA> DELETE snapshot-unit-name
d. Verify that all appropriate Snapshot units were deleted by entering the
following command:
HSGA> SHOW UNITS FULL
Note: If any Snapshot unit exists, repeat step 8 on page 174.
9. Identify and record the current cache flush timer value of the “this controller.”
After issuing the following command, the subsequent screen displays the
cache flush timer value:
HSGA> SHOW THIS_CONTROLLER
Figure 72 shows only a portion of the resulting display—an arrow points to
the pertinent status indication.
Figure 72: Screen display indicating cache flush timer value
10. Identify and record the current cache flush timer value of the “other
controller.” After issuing the following command, the subsequent screen
displays the cache flush timer value:
HSGA> SHOW OTHER_CONTROLLER
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=DEFAULT (10 seconds)