HP StorageWorks HSG80 Enterprise Modular Storage RAID Array Fibre Channel Solution Software V8.8 for OpenVMS Release Notes (AA-RV1QA-TE, March 2005)

ACS Enhancements and Fixes

20 HSG80 Enterprise Modular Storage RAID Array Fibre Channel Solution Software V8.8 for

OpenVMS Release Notes

ACS Downgrade

With this release, you can downgrade ACS from V8.8-1 to V8.7-1 or V8.6-1 (the

base version). No other versions are supported. With this, changes have been

made to associated screens. Contact HP support for additional information.

Note: If you are downgrading ACS V8.8-1 and pre-existing patches from V8.6 or

V8.7 remain in controller memory, the system downgrades your system to the highest

patch level that was previously installed.

Procedural changes when modifying Cache Mirror mode

After entering the CLI command to change the cache operational mode

(MIRRORED_CACHE or NOMIRRORED_CACHE), array controllers now

display a report showing units with persistent reservations. Following this screen

report, the system requires you to determine which units are attached to the same

cluster or host before changing the cache configuration. See the HP StorageWorks

Array Controller and Array Controller Software Command Line Interface Guide

for additional information.

Note: Since Tru64 UNIX host systems automatically assume that persistent reservations

are never lost and array controllers automatically restructure cache data whenever its

operational mode is changed, additional steps must be taken. First, you must associate

any one unit with persistent reservations. Then, you must enter the

SET unit FAKE_PR command to restore persistent reservations that may have been

lost. Lastly, you must execute any type of Tru64 UNIX host operation that results in a

read to physical unit associated to restore all persistent reservations. Doing this, causes

Tru64 UNIX host systems to re-establish unit persistent reservation structures.

Note: Units associated with clusters require that you individually invoke the

SET unit-number FAKE_PR command against each unit.