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The Question is: I have recently been working on a site which has both 2 Alpha/OpenVMS 8200(6.2-1H3) & 2 VAX/VMS 6420(5.5-2)in a 4 node cluster (different system disks of course but same application startups, data sharing, etc.) I have been told that when there was an issue with cluster communications in the past that Compaq stated that this Cluster was unsupported given the Cluster configuration espessially the Operating System versions respectively. Is this true? Thanks in Advance The Answer is :
This configuration is considered supported ("migration support"), please
see the OpenVMS Cluster Software Product Description (SPD) for specifics
of the support. SPDs for various products are available at:
http://www.digital.com/SPD/
The current OpenVMS Cluster SPD is available at:
http://www.digital.com/info/SP2978/
The relevent section of the SPD contains the following text:
"Migration support is provided for OpenVMS Cluster systems running two
versions of the OpenVMS operating system. These versions can be:
1. Any mix of Version 7.2, Version 7.1-2, Version 7.1-1Hx,
Version 7.1, Version 7.0, and Version 6.2-xxx.
2. Any mix of Version 6.2-xxx with OpenVMS VAX Version 5.5-2,
Version 6.0, Version 6.1 and OpenVMS Alpha Version 1.5,
Version 6.0, Version 6.1.
Migration support means that Compaq has qualified the two architectures
and versions for use together in configurations that are migrating in a
staged fashion to a higher version of OpenVMS or to Alpha systems.
Compaq will answer problem reports submitted about these configurations.
However, in exceptional cases, Compaq may recommend that you move your
system to a warranted configuration as part of the solution."
OpenVMS VAX V5.5-2 and OpenVMS Alpha V6.2-1H3 do have specific known
(minor) incompatibilities such as with initiating SYSMAN connections,
but operations in a combined cluster are supported.
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