Refer to the appropriate version of your software below.
Exchange 2003
Some customers migrating from Exchange 2003 have reported that their Exchange 2003 database files had increased in size. Note that MigrationWiz never alters Source data in any way. However, as data is retrieved, Exchange can index, cache, log, or convert data to increase storage. For example, Exchange 2003 may perform MIME content conversion, generate message tracking logs, or experience fragmentation, which could cause EDB files to increase in size.
If you see data inflation at the Source:
- Consider running eseutil.exe to defragment databases.
- Determine whether Message Tracking is enabled (see the example below - check to see if the log is rolling).
- Review this article.