Mixed-Version Support in OpenVMS Cluster Systems
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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 the two specified versions coexisting in an OpenVMS Cluster and will address all problems identified by customers using this configuration.
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 VAX, OpenVMS Alpha, or OpenVMS I64. 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. For the minimum version supported for an upgrade to OpenVMS Version 8.3, see “Upgrade Paths”.
Warranted cluster support is provided for the combinations shown in Table 2-2 “Warranted Cluster Support”. (OpenVMS VAX systems are not supported with OpenVMS I64 systems in the same cluster.)
Table 2-2 Warranted Cluster Support
| If your system is... | It is warranted in combination with... |
|---|---|
OpenVMS Alpha Version 8.3 | OpenVMS Alpha Version 8.3 and OpenVMS I64 Version 8.3 or OpenVMS Alpha Version 8.3 and OpenVMS VAX Version 7.3 |
OpenVMS I64 Version 8.3 | OpenVMS I64 Version 8.3 and OpenVMS Alpha Version 8.3 |
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 | NOTE: 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. Only one version of each
architecture is supported in the same OpenVMS Cluster: Version 8.3
of OpenVMS Alpha and OpenVMS I64, and Version 7.3 of OpenVMS VAX. 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 between an Alpha and VAX system. 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, see the Guidelines for OpenVMS Cluster Configurations and HP OpenVMS Cluster Systems. |
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Table 2-3 “Supported Migration Pairs” shows the supported migration pairs.
Table 2-3 Supported Migration Pairs
| If your system is... | It is supported with any one of the following being migrated to version 8.3... |
|---|---|
OpenVMS Alpha Version 8.3 or OpenVMS I64 Version 8.3 | OpenVMS Alpha Version 8.2 OpenVMS Alpha Version 7.3-2 OpenVMS I64 Version 8.2-1 OpenVMS I64 Version 8.2 |
For more information, see the OpenVMS Technical Software Support Service Web site at:
http://www.hp.com/go/openvms/support
In addition, see the OpenVMS Operating System Support Chart at:
http://www.hp.com/go/openvms/supportchart
Before introducing an OpenVMS Version 8.3 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, see the HP OpenVMS Version 8.3 Release Notes.
For information about supporting the TDC_RT software in OpenVMS Clusters, see “Installation in OpenVMS Clusters”.