Carlo_Giuliani
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Contributor

SQL Server 2012 "Always on" replica groups - limited to 2 nodes on VMWare?

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VMWare KB1037959 provides guidelines for Microsoft clustering on VMWare, but does not seem to cover SQL Server 2012 "Always on"  replica groups.

That KB article sets a limit of 2 nodes for MSCS clusters, but also states that "SQL Mirroring is not considered by VMware to be a clustering solution. VMware fully supports SQL Mirroring on vSphere with no specific restrictions."

In SQL 2012, replica groups are a combination of the Microsoft Cluster Service (MSCS) failover monitor and SQL database mirroring.  Yo have to install the "Microsoft Fail Over Cluster" role to implement the SQL replica groups, butyou don't have to any shared disks.

I haven't been able to find any guidance on use of SQL 2012 replica groups on VMWare.  I am hoping it is supported without any restrictions (as long as you don't use a shared disk for quorum)  but a strict reading of KB1037959 leads to a limitation of two nodes.

Can anybody shed more light on this?

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hennish
Hot Shot
Hot Shot

The last row in the first table now lists:

SQL AlwaysOn Availability Group YesYes1YesYesSame as OS/appYesYesYesYesN/AN/A

Perhaps this has been added recently.

Would that answer your question?

View solution in original post

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hennish
Hot Shot
Hot Shot

The last row in the first table now lists:

SQL AlwaysOn Availability Group YesYes1YesYesSame as OS/appYesYesYesYesN/AN/A

Perhaps this has been added recently.

Would that answer your question?

View solution in original post

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Carlo_Giuliani
Contributor
Contributor

Looks like the article was updated just a few days ago (August 27) to include SQL Server availability groups  !

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