Microsoft Product/Customer Support Services has introduced new phase of provision to address the user issues. This program has been divided into various phases such as assessment, configuration and management with a flavour of Performance & Tuning. SQL: Risk Assessment Program (SQLRAP) Datasheet...
Though it is more to do with SQL Storage kind of question, I have just dragged into Performance tuning section for the sake of large installation you talk with clustering. For the sake of discussion it seems better to plan ahead for the failing instances since, for example, two of the four servers could...