Topic Last Modified: 2010-07-25

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager includes a performance data collection engine that is used to query performance counter objects on computers running Exchange 2010. For this Operations Manager rule, data is collected by using the performance counter specified in the Details table.

To review the value of the performance counter that generated this alert, in Operations Manager, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.

Details

Product Name

Exchange

Product Version

14.0 (Exchange 2010)

Object Name

MSExchange ADAccess Domain Controllers

Counter Name

Number of outstanding requests

Sample Interval

60

Server Role

Ex14. Common

Warning Threshold

50

Rule Path

Microsoft Exchange Server/Exchange 2010/Common Components/Domain Controller

Rule Name

Number of outstanding requests - sustained for 5 minutes - Yellow(>50).

Explanation

The Number of outstanding requests performance counter shows the number of outstanding requests that were made to the domain controllers in the last minute. The average value should be less than 50 and the maximum value should not exceed 100. This event indicates that there have been 50 or more outstanding requests per minute made to the domain controller for five minutes.

User Action

Run the Dcdiag command-line tool to test domain controller health. To do this, run dcdiag /s:<Domain Controller Name> at a command prompt on the Exchange server. Use the output of Dcdiag to discover the root cause of any failures or warnings that it reports. For more information, see Dcdiag Overview at the Windows Server TechCenter.

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.