HP StorageWorks Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide (AA-RPHZF-TE, March 2004)

Upgrading to ACS Version 8.7P Software
229Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide
T 6. Set the CACHE_FLUSH_TIMER to 1 second with the following commands:
HSGA> SET THIS_CONTROLLER CACHE_FLUSH_TIMER=1
HSGA> SET OTHER_CONTROLLER CACHE_FLUSH_TIMER=1
T 7. Disable writeback caching on all units to help minimize failover time. Issue the following
command as required for each unit:
HSGA> SET unit-name NOWRITEBACK_CACHE
T 8. Determine whether all data has been flushed from the cache module:
HSGA> SHOW THIS_CONTROLLER
The following text is only a portion of the resulting display:
Note: Repeat this step on both controllers (THIS_CONTROLLER and OTHER_CONTROLLER) until
no unflushed data remains in either cache module memory.
If unwritten data is present after 15 minutes, verify that WRITEBACK_CACHE was disabled on all
units by issuing the SHOW UNITS FULL command. For any units with WRITEBACK_CACHE
enabled, return to step 7 and proceed from there.
T 9. Shut down Controller B:
HSGA> SHUTDOWN OTHER_CONTROLLER
Note: Disregard any messages about misconfigured controllers or failover status.
After Controller B shuts down, the Reset button and the first three LEDs turn on (see Figure 38 on
page 226). Proceed only after the Reset button stops flashing and remains on.
T 10. Verify that all units failed over to Controller A by issuing the following command to show
the status of each unit:
HSGA> SHOW UNITS FULL
The following text is only a portion of the resulting display:
T 11. Upgrade the software on Controller B by performing the following steps.
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=1 SECOND
State:
ONLINE to this controller
Not reserved