Mixed-Version Support in an OpenVMS Cluster
Environment
HP provides two levels of support for mixed-version and mixed-architecture
OpenVMS Cluster systems. These two support types are warranted and migration.
Warranted support means that HP has fully qualified the two
versions coexisting in an OpenVMS Cluster and will answer 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 release
includes no configurations specific to migration support.
Warranted support is provided for the following version groupings:
Alpha Version
8.2 and Alpha Version 7.3-2
Alpha Version 8.2 and I64
Version 8.2
Alpha Version 8.2 and VAX
Version 7.3
Alpha Version 7.3-2 and VAX
Version 7.3
I64 Version 8.2 and Alpha
Version 7.3-2
I64 Version 8.2, Alpha Version
8.2, 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. 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.
For more information, refer to the OpenVMS Technical Software
Support Service Web site at:
http://h71000.www7.hp.com/serv_support.html
In addition, refer to the following Web site for the OpenVMS
Operating System Support Chart:
In a mixed-version cluster, you might need to install remedial
kits on earlier versions of OpenVMS. For a complete list of required
remedial kits, refer to the HP OpenVMS Version 8.2 Release
Notes
. In a mixed-architecture cluster, you need to
install an LMF patch on any OpenVMS Version 7.3-2 Alpha members.
For information about supporting the Performance Data Collector
base software (TDC_RT) in OpenVMS Clusters, see
Installation in OpenVMS Clusters.
HP OpenVMS Version 8.2 Upgrade and Installation... 
Preparing to Upgrade in an OpenVMS Cluster Environment
