How to Enable Extended ESE Performance Counters


Drive letters used for the storage of Exchange 2003 database and log files are not presented as physical or logical disks; instead, they are presented as drive letters associated with a network file share. To measure performance of your network-attached storage system, you can enable the extended ESE performance counters available in Exchange 2003 Service Pack 1 (SP1) and later.

Before You Begin

This topic contains information about editing the registry.


Incorrectly editing the registry can cause serious problems that may require you to reinstall your operating system. Problems resulting from editing the registry incorrectly may not be able to be resolved. Before editing the registry, back up any valuable data.


To enable extended ESE performance counters

  1. Open Registry Editor.

  2. Navigate to HKLM\SYSTEM\CurrentControlSet\Services\ESE\Performance.

  3. Right-click Performance and select New | DWORD Value.

  4. Name the new DWORD value Show Advanced Counters.

  5. Double-click Show Advanced Counters.

  6. In the Value data field, enter 1.

  7. Close the registry editor.

For More Information

For information about how to edit the registry, see Microsoft Knowledge Base article 256986, Description of the Microsoft Windows Registry.