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

Upgrading to ACS Version 8.7P Software
234 Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide
Target Site Shutdown Upgrade Procedure
Note: During the target site upgrade, one of the initiator site controllers could restart with an
instance code of 0xE096980. This potential restart is expected; disregard the associated instance
code.
T 1. From a host console, stop all host activity to the controllers and dismount the logical units
in the subsystem.
T 2. Connect a PC or terminal to the maintenance port of Controller A at the target site.
T 3. Delete all snapshot units by performing the following steps:
a. Identify all snapshot units:
HSGA> SHOW UNITS FULL
b. Record the configuration for each snapshot unit for restoration in step 11.
c. Delete all snapshot units individually:
HSGA> DELETE snapshot-unit-name
T 4. Verify that all snapshot units are deleted by issuing the following command:
HSGA> SHOW UNITS FULL
Note: If any snapshot unit exists, repeat step 3.
T 5. Identify and record the current CACHE_FLUSH_TIMER value:
HSGA> SHOW THIS_CONTROLLER
The following text is only a portion of the resulting display:
Note: The CACHE_FLUSH_TIMER value is displayed in the caching parameters section. This
parameter is modified during the procedure and must be restored in step 10.
T 6. Set the CACHE_FLUSH_TIMER to 1 second:
HSGA> SET THIS_CONTROLLER CACHE_FLUSH_TIMER=1
HSGA> SET OTHER_CONTROLLER CACHE_FLUSH_TIMER=1
T 7. Determine whether all data has been flushed from the cache module by issuing the
following command:
HSGA> SHOW THIS_CONTROLLER
The following text is only a portion of the resulting display:
Cache:
256 megabyte write cache, version 0022
Cache is GOOD
No unflushed data in cache
CACHE_FLUSH_TIMER=DEFAULT (10 seconds)