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

Upgrading the Subsystem
184 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
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.
7. Set the CACHE_FLUSH_TIMER to 1 second by entering the following
commands:
HSGA> SET THIS_CONTROLLER CACHE_FLUSH_TIMER=1
HSGA> SET OTHER_CONTROLLER CACHE_FLUSH_TIMER=1
8. Determine if all data is flushed from the cache module by entering the
following command:
HSGA> SHOW THIS_CONTROLLER
Figure 78 shows only a portion of the resulting display—an arrow points to
the pertinent status indication.
Figure 78: Screen display indicating whether all data is flushed from the system
Note: Repeat step 8 on both controllers (“this controller” and the “other controller”)
until no unwritten data remains in either cache module memory.
9. Shut down both controllers by entering the following commands:
HSGA> SHUTDOWN OTHER_CONTROLLER
HSGA> SHUTDOWN THIS_CONTROLLER
Note: After the controllers shut down, the Reset buttons and the first three LEDs turn
on (see Figure 74 on page 177). Proceed only after the Reset buttons stop flashing
and remain solid.
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=1 SECOND