Hello guys, Just need to know this information. When we running the JetStress for Exchange 2010. Do we need to create Performance counters manully or will it create counters automatically ? Regards

No, Normally it takes the default counter until or unless you want to define your own. http://www.msexchange.org/articles_tutorials/exchange-server-2010/management-administration/disk-performance-testing-jetstress-tool-exchange-server-2010.html Cheers,Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah

For more information about Exchange 2010 performance monitor, please refer to: Perfwiz for Exchange 2010 http://blogs.technet.com/b/mikelag/archive/2010/01/11/perfwiz-for-exchange-2010.aspx Performance and Scalability Counters and Thresholds http://technet.microsoft.com/en-us/library/dd335215.aspx Thanks, Simon