%1 (%2) %3The database engine log disk is full. Deleting logfiles to recover disk space may make your database unstartable if the database file(s) are not in a Clean Shutdown state. Numbered logfiles may be moved, but not deleted, if and only if the database file(s) are in a Clean Shutdown state. Do not move %4.

Details
Product: Exchange
Event ID: 429
Source: ESE
Version: 8.0
Symbolic Name: LOG_DISK_FULL
Message: %1 (%2) %3The database engine log disk is full. Deleting logfiles to recover disk space may make your database unstartable if the database file(s) are not in a Clean Shutdown state. Numbered logfiles may be moved, but not deleted, if and only if the database file(s) are in a Clean Shutdown state. Do not move %4.
   
Explanation

This Error event indicates that the disk that contains the transaction log files of the database engine is full.

   
User Action

To resolve this error, you may have to manually remove any unnecessary Exchange Server transaction log files.

Deleting log files to recover disk space may prevent the database from starting if the database files are inconsistent. If you remove a log file that contains data that has not yet been written to the database files, the databases will no longer be mountable after an abnormal stop.

To safely create space on the log disk, see Microsoft Knowledge Base article 240145, How to remove Exchange Server transaction log files.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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