XADM: How to Restore a 4.0 Information Store to a 5.0 Server

• Microsoft Exchange Server, version 4.0
• Microsoft Exchange Server, version 5.0

SUMMARY

In some situations it may be necessary to restore an older Microsoft Exchange Information Store (IS) created under Microsoft Exchange Server version 4.0 to a version 5.0 Server. One solution would be a complete uninstallation and re- installation of the 4.0 Server and an upgrade of the 4.0 Server to 5.0. Since this would be quite time consuming another method can be used.

MORE INFORMATION

Either of the following methods can be used after a clean install of Microsoft Exchange Server version 5.0.

NOTE: The 5.0 Server must be installed with the same Microsoft Site and Organization name as the 4.0 Server that the files originated at.

• Restore the online copy of the IS from the 4.0 backup set, choosing to erase all existing data.
• Remove all data from the current mdbdata directory including all logs, edb files, and the Edb.chk file. Copy the 4.0 Priv.edb and Pub.edb files from an offline backup. Start the IS.