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Overview 2 dashboard
Will show general statistics and performance metrics including some overall procedure statistics, performance counters and file IO statistics:

Corresponding view in the Performance Store database:
dbo.v_activity_aggregated
dbo.v_servers
dbo.v_databases
dbo.v_latest_stats
dbo.v_wait_stats
dbo.v_memory_clerks
dbo.v_fileio_stats
dbo.v_performance_counters
dbo.v_capacity_data_and_log_drives
dbo.v_size_changes
dbo.v_procedure_stats_current
dbo.v_query_stats_current
dbo.v_latest_changes
dbo.v_hist_response_time
dbo.v_hist_performance_counters
dbo.v_hist_memory_clerks
dbo.v_hist_fileio_stats
dbo.v_hist_execution_info
dbo.v_hist_databases
dbo.v_hist_audit
dbo.v_hist_activity_aggregated