mixing versions of SQLServer in a clustered environment

  • Is there anyone here experience to have SQL 2000 in one instance and SQL2005 in other instance in the same box in a clustered environment?

    If yes, are there any issues?

     

  • Yes, That defeats the whole purpose of clustering.  If the machine with the two instances has a hardware failure.  Your whole cluster fails.  Where if you had two seperate physical machines with their own install of SQL Server, then in the case of a hardware failure the MSCS would fail over to the other server.

     

  • Clarify:

    Two instances in one box with two different version of SQL Server. It is a Active/Passive environment.

    If there is a hardware failure. The other box kicks in...

  • As far as I know, there should be no issues.

    Only thing I am aware of is that you cannot install another SQL 2000 after installing SQL 2005 instance. I remember there is workaround from Microsoft for this.

  • It should be possible but I figure it would be horrible to support, a failover in one instance would force a failover of the other I figure - could be messy!!

    [font="Comic Sans MS"]The GrumpyOldDBA[/font]
    www.grumpyolddba.co.uk
    http://sqlblogcasts.com/blogs/grumpyolddba/

  • http://msdn.microsoft.com/library/default.asp?url=/library/en-us/architec/8_ar_cs_9i5u.asp

    Multiple Instances of SQL Server on a Failover Cluster

    You can run only one instance of SQL Server on each virtual server of a SQL Server failover cluster, although you can install up to 16 virtual servers on a failover cluster. The instance can be either a default instance or a named instance.

    This means it is not advisable?

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