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    This template contains advanced performance and statistics counters for monitoring Exchange 2010 Client Access Role. Some of the counters may require manual configuration, such as setting up installation-specific instances, correcting thresholds for the client’s environment, and so forth. Use this template in addition to the Exchange 2007-2010 Client Access Role Services and Counters (Basic) template.

    RPC and WMI access to the Exchange server. 

    Credentials: Windows Administrator on target server. 

    Monitored Components

    These performance counters are based on the following information:


    RPC Operations/sec

    Shows the rate at which RPC operations occur, per second.

    Referral RPC Requests Average Latency

    This is Exchange 2010 address book service counter. Shows the average time, in ms, that referral requests took to complete during the sampling period.

    Should be below 1,000 ms.

    Requests - Average Response Time

    Shows the average time (in ms) the Exchange Control Panel took to respond to a request during the sampling period.

    The average should be under 6,000 ms.

    ActiveSync: Requests/sec

    Shows the number of HTTP requests received from the client via ASP.NET per second.

    Determines the current Exchange ActiveSync request rate.

    OWA: Current Unique Users

    Shows the number of unique users currently logged on to Outlook Web App. This value monitors the number of unique active user sessions, so that users are only removed from this counter after they log off or their session times out.

    Determines current user load.

    OWA: Requests/sec

    Shows the number of requests handled by Outlook Web App per second.

    Determines current user load.

    Web Service: Current Connections

    Shows the current number of connections established with the Web service.

    Determines current user load.

    Requests - Activations/sec

    Shows the number of requests activated per second in the Exchange Control Panel.

    Connection Count

    This is RPC Client Access load counter. Shows the total number of client connections maintained.

    NSPI Connections Current

    This is Exchange Address Book load counter. Shows the number of NSPI clients currently connected to the server.

    NSPI RPC Requests/sec

    This is Exchange Address Book load counter. Shows the rate at which NSPI requests occur each second.

    Portions of this document were originally created by and are excerpted from the following sources:

    Microsoft Corporation, “Technet Library,” Copyright © 2012 Microsoft Corporation.  All rights reserved. Available at and