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

Upgrading the Subsystem
205HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
d. Verify that all Snapshot units were deleted by entering the following
commands, as required:
HSGA> SHOW UNITS FULL
Note: If any Snapshot unit exists, repeat step 5 on page 204.
6. Identify and record the current cache flush timer value of the “this controller.”
The subsequent screen displays the cache flush timer value:
HSGA> SHOW THIS_CONTROLLER
Figure 89 shows only a portion of the resulting display—an arrow points to
the pertinent status indication.
Figure 89: Screen display indicating cache flush timer value
7. 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
Note: The cache flush timer value is displayed in the caching parameters section. This
parameter is modified during the procedure and must be restored later in this
procedure.
8. Set the cache flush timer to 1 second to minimize the flush time, by entering
the following commands:
HSGA> SET THIS_CONTROLLER CACHE_FLUSH_TIMER=1
HSGA> SET OTHER_CONTROLLER CACHE_FLUSH_TIMER=1
9. Determine if all data is flushed from the cache module, by entering the
following command:
HSGA> SHOW THIS_CONTROLLER
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=DEFAULT (10 seconds)