Hi 

I've discovered that a sql 2005 cluster we have has got one node patched to sp2 and the other is not patched.

 Also the unpatched version seems to be missing management tools as I can't create maintenance plans.

 Is it safe to fail over to the patched node and then patch the unpatched node?  If not then how should I best proceed?

thanks in advance for your help

Martin

According to link below failover to other node and add the SP is best way,

 http://sqlserver-qa.net/blogs/tools/archive/2008/03/27/sql-server-clustering-get-pre-installation-information-and-choose-the-best-practices-for-your-environment.aspx 

 Thanks

Sat 

 thanks for the link

Martin