Hi, I have following query: 1) All my test Data Collectors Set report found empty, any ideas? 2) How do you determine Iscsi performance from perfmon, which performance counters should monitor?

Hi, Regarding the first question, do you mean the Data Collector Sets cant generate any report? If so, I suggest wed better check if we have enabled report generation for the data collector set. To do so here are the steps: Right click on your data collector set in left pane in Performance Monitor and select 'Data Manager...'In the bottom of the Data Manager tab, select the check box : 'Enable data management and report generation' and choose OK.Now after running DCs and stopping it, we could be able to see its report. For details about how to view reports in Performance Monitor, please refer to the article below. View Reports in Windows Performance Monitor http://technet.microsoft.com/en-us/library/cc766130 In addition, the similar thread below may be useful to us. Performance Monitor - Creating Data Collection Set and select Manual in the Wizard, but there is NO report http://social.technet.microsoft.com/Forums/en-US/winserverManagement/thread/19dfa84a-fe5a-4b4a-9eda-98d6f06b013d Regarding performance counters for iSCSI, we could refer to the following article for details. Performance counter for iSCSI http://blogs.technet.com/b/askperf/archive/2010/12/03/performance-counter-for-iscsi.aspx Hope these help. Thanks. Regards, Andy