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SQL Server 2008 R2 cluster with default instance Expand / Collapse
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Posted Tuesday, April 9, 2013 8:07 PM


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Hi,

I have a server with two instances: one default and one named using SQL Server 2008 R2 Enterprise on
Windows Server 2008. Am I correctly understanding, that I can cluster that server without migrating the default instance into a named instance like in the old days, when clusters did not allow default instances, as long as each instance has its own IP and disk drives.

Thanks.



Post #1440628
Posted Wednesday, April 10, 2013 2:35 AM


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Not sure i understand exactly what you are asking but i wouldnt cluster a machine that already has stand alone instances of sql server installed.

Clusters support the same instance naming config as standalone, i.e. one default instance and x amount of named instances.


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Post #1440702
Posted Wednesday, April 10, 2013 9:32 AM
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I suppose you can make the server part of a Windows Cluster, but the existing SQL instances would not be be clustered (able to failover). A clustered SQL instance must be initially insalled as a clustered SQL Instance on a server that is already part of a single or multi-node cluster.
Post #1440892
Posted Wednesday, April 10, 2013 7:44 PM


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So I understand I would have to re-install the default and the named instances to make them failover, but will be able to keep the names of the instances in the cluster. Is this correct?
Having the same name for both instances is the most important for me.




Post #1441085
Posted Thursday, April 11, 2013 12:38 AM


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Roust_m (4/10/2013)
So I understand I would have to re-install the default and the named instances to make them failover

Correct, but you would have to remove the stand alone instances first rather than just re installing 2 new instances.


Roust_m (4/10/2013)
but will be able to keep the names of the instances in the cluster. Is this correct?
Having the same name for both instances is the most important for me

You can keep the instance names if you remove the standalone instances first.


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Post #1441124
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