Add Analysis Services to a clustered SQL Server 2008 instance

Question

I have an existing multi-instance SQL 2008 cluster, and I'm trying to add Analysis Services to an existing instance. I start the installation, pick "Add features", configure SSAS, and then on the final pre-installation check, I fail the "Existing clustered or cluster-prepared instance" check. Of course I'd fail this check - I'm trying to add a feature to an existing clustered instance. Here's a picture of the error:

_{(source: trycatchfinally.net)}

Has anybody successfully added a feature to a clustered instance in SQL 2008? I can't believe it can't be done - my alternative is to remove SQL from one node, try to add the feature again, hoping I don't fail this same check (though I probably will), and then re-add to the second node. This seems dangerous and unnecessary.

I found another person who had the same question, but the people answering it clearly aren't even reading the question, since they're mentioning how to cluster a server, and that he should use SQL 2000, so this is no help at all (though I'd love to point him here once it's answered: http://forums.techarena.in/software-development/1209984.htm

Answer 1

Take a look at the SQL Server 2008 Failover Clustering whitepaper.

http://download.microsoft.com/download/6/9/D/69D1FEA7-5B42-437A-B3BA-A4AD13E34EF6/SQLServer2008FailoverCluster.docx

Page 31 & 32

"Note: SQL Server 2008 does not support adding features to an existing failover cluster instance, so Analysis Services cannot be added to an existing instance of SQL Server. To share a resource group with an instance of SQL Server, you must choose to install Analysis Services during the initial installation of SQL Server."