Microsoft KB Archive/249004

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XADM: ESE Log File Names Start with the Log File Prefix Exx Instead of Starting with EDB

Article ID: 249004

Article Last Modified on 2/22/2007


  • Microsoft Exchange 2000 Server Standard Edition

This article was previously published under Q249004


In Microsoft Exchange Server 4.0 and 5.x, the Extensible Storage Engine (ESE) log file names always start with "EDB" (for example, Edb.log, Edb00001.log, Edb00002.log, and so on).

In Microsoft Exchange 2000 Server, you can have multiple Storage Groups on a server, with each storage group capable of supporting several information stores. Each Storage Group uses its own set of transaction log files. To distinguish between log files belonging to different Storage Groups, in Exchange 2000, log file names start with the log file prefix (for example, E00.log, E0000001.log, E01.log, E0100001.log, and so on).

When a Storage Group is created, the administrator program checks for existing sets of log files on that server and generates the next unique Exx number. This unique Exx number is called the log file prefix and can be viewed through a read-only field on the Properties page of the Storage Group.


This value is stored in Windows 2000 Active Directory in an attribute called msExchESEParamBaseName, which can be located using either the Adsiedit.msc tool or the Ldp.exe tool, both of which are Windows 2000 Resource Kit utilities.

This value resides at the following location in Active Directory:

CN=[STORAGE GROUP],CN=InformationStore,CN=[SERVER NAME],CN=Servers,CN=[ADMINISTRATIVE GROUP],CN=Administrative Groups,CN=[ORGANIZATION NAME],CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=[DOMAIN NAME],DC=com;

Keywords: kbinfo KB249004