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

Upgrading the Subsystem
191HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
9. Determine if all data is flushed from the cache module by entering the
following command:
HSGA> SHOW THIS_CONTROLLER
Figure 81 shows only a portion of the resulting display—an arrow points to
the pertinent status indication.
Figure 81: Screen display indicating whether flushed data remains in cache
10. Repeat step 9 on both controllers (“this controller” and the “other controller”)
until no unwritten data remains in either cache module memory.
Note: If unwritten data is present after several minutes, verify that writeback cache
was disabled on all units by using the SHOW UNITS FULL command. For any units
with writeback cache enabled, return to step 6 on page 190 and proceed.
11. Shut down controller B by entering the following command:
HSGA> SHUTDOWN OTHER_CONTROLLER
Note: Disregard any messages pertaining to misconfigured controllers or failover
status.
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=1 SECOND