Installation manual

6
Preparing to Upgrade in an OpenVMS Cluster
Environment
This chapter describes how to upgrade an OpenVMS Cluster environment. Refer
to OpenVMS Cluster Systems for more detailed information about OpenVMS
Cluster environments.
6.1 Mixed-Version Support
OpenVMS Alpha Version 7.3 and OpenVMS VAX Version 7.3 provide 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 Compaq has fully qualified the two versions
coexisting in an OpenVMS Cluster and will answer all problems identified by
customers using these configurations.
Migration support is a superset of the Rolling Upgrade support provided in
earlier releases of OpenVMS and is available for mixes that are not warranted.
Migration support means that Compaq has qualified the versions for use
together in configurations that are migrating in phases to a newer version of
OpenVMS VAX or to OpenVMS Alpha. Problem reports submitted against these
configurations will be answered by Compaq. However, in exceptional cases
Compaq may request that you move to a warranted configuration as part of
answering the problem.
Compaq supports only two versions of OpenVMS running in a cluster at the
same time, regardless of architecture. Migration support helps customers move
to warranted OpenVMS Cluster pairs. Table 6–1 shows the level of support
provided for all possible version pairings.
Table 6–1 OpenVMS Cluster Warranted and Migration Support
Alpha/VAX V7.3
Alpha V7.2x
VAX V7.2
Alpha V7.1-2
VAX V7.1
Alpha/VAX V7.3 WARRANTED Migration Migration
Alpha V7.2x/VAX V7.2 Migration WARRANTED Migration
Alpha V7.1-2/VAX V7.1 Migration Migration WARRANTED
Preparing to Upgrade in an OpenVMS Cluster Environment 6–1