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Consider a case where there is a pre-existing SQL Server 2000 Enterprise Edition 2-node cluster. Could a SQL Server 2005 or 2008 Standard be installed on the same cluster hardware, also in a clustered configuration? What are the constraints, limitations, caveats, and requirements for doing so? Thanks!
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According to this white paper you can install 2000, 2005 and 2008 side by side in a cluster, as separate instances. One caveat is that you must have SQL 2000 SP4 installed.
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Yes it can. The constraints are that the SQL 2005 instance needs it's own Cluster IP and disk resources, so you set up a separate cluster group for the 2000 and 2005 instances. But they can share the same quorum, and obviously run on the same physical hardware.
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