Mixed-Version Support in an OpenVMS Cluster
Environment
HP provides two levels of support for mixed-version and mixed-architecture
OpenVMS Cluster systems: warranted support and migration support.
Warranted support means that HP has fully qualified two specified
versions coexisting in an OpenVMS Cluster and will address all problems
identified by customers using these configurations.
Migration support means that HP has qualified the versions
for use together in configurations that are migrating in a staged
fashion to a newer version of OpenVMS. Problem reports submitted
against these configurations will be answered by HP. However, in
exceptional cases, HP may request that you move to a warranted configuration
as part of the solution. Migration support helps customers move
to warranted OpenVMS Cluster pairs. The OpenVMS Version 8.2-1 release
includes no configurations specific to migration support.
Warranted cluster support is provided for OpenVMS I64 Version
8.2-1 in combination with one or more of the following:
OpenVMS I64
Version 8.2
OpenVMS Alpha Version 8.2
OpenVMS Alpha Version 7.3-2
System disks are architecture specific and can be shared
only by systems of the same architecture. An Alpha and I64 system,
or an Alpha and VAX system, cannot boot from the same system disk.
However, cross-architecture satellite booting is supported. (For
this release of OpenVMS I64, satellite booting is not supported.)
When you configure an OpenVMS Cluster to take advantage of cross-architecture
booting, make sure that at least one system from each architecture
is configured with a disk that can be used for installations and
upgrades. For more information, refer to the Guidelines for OpenVMS Cluster Configurations
and HP OpenVMS Cluster Systems
manuals.
Only two architectures are supported in the same OpenVMS Cluster: OpenVMS
I64 and OpenVMS Alpha, or OpenVMS Alpha and OpenVMS VAX, but not
OpenVMS I64 and OpenVMS VAX.
For more information, refer to the OpenVMS Technical Software
Support Service Web site at:
http://www.hp.com/go/openvms/support
In addition, refer to the following Web site for the OpenVMS
Operating System Support Chart:
http://www.hp.com/go/openvms/supportchart
Before introducing an OpenVMS Version 8.2-1 system into an
existing OpenVMS Cluster, you might need to install certain patch
kits (also known as remedial kits) on cluster members running earlier
versions of OpenVMS. For a complete list of required patch kits, refer
to the HP OpenVMS Version 8.2-1 for Integrity Servers
New Features and Release Notes
.
For information about supporting the Performance Data Collector
base software (TDC_RT) in OpenVMS Clusters, refer to
Installation in OpenVMS Clusters.
HP OpenVMS Version 8.2-1 for Integrity Servers... 
Preparing to Upgrade in an OpenVMS Cluster Environment
