[From Microsoft Corp.
The SQL Server 2005 Performance Dashboard Reports are Reporting Services report files designed to be used with the Custom Reports feature introduced in the SP2 release of SQL Server Management Studio. The reports allow a database administrator to quickly identify whether there is a current bottleneck on their system, and if a bottleneck is present, capture additional diagnostic data that may be necessary to resolve the problem. For example, if the system is experiencing waits for disk IO the dashboard allows the user to quickly see which sessions are performing the most IO, what query is running on each session and the query plan for each statement.
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