Monitoring Disk Space

You can use Windows NT Performance Monitor to observe disk space use on the drive that contains the information store. The LogicalDisk object, along with the % Free Space and Free Megabytes counters, are used to monitor and trigger alerts when disk space is low.

If circular logging is turned off, the information store or the directory can run out of operating space as log files accumulate on the drive. To prevent this, do any one of the following:

• Write the log files to a different drive. Change the location where the information store or directory store transaction logs are written. To do so, select the server object. From the File menu, choose Properties, and then select the Database Paths tab. Change the path names for the information store and directory transaction logs, and then choose OK.
• Back up the Microsoft Exchange Server computer. Use Windows NT Backup to perform a normal (full) or incremental online backup of the server. This utility automatically deletes transaction logs that are no longer needed (that is, they have been committed to disk). If you do not run Windows NT Backup, the log files continues to grow.
• If possible, delete any sample applications to free additional disk space.