Restore of Public Folder Database may fail when the restore is performed to Recovery Storage Group in case of Exchange 2007 or Recovery Database in case of Exchange 2010.
Microsoft Exchange Server 2007 recovery storage group (RSG) is a special administrative storage group that enables you to mount a mailbox database, extract data from the mounted database, and then either copy the extracted data to a folder in an existing mailbox or merge the extracted data with an existing mailbox.
Microsoft Exchange Server 2010 recovery database (RDB) is a special kind of mailbox database that allows you to mount a restored mailbox database and extract data from the restored database as part of a recovery operation.
Public Folder Database cannot be mounted to a recovery storage group (RSG) or recovery database (RDB) . This is a design limitation of Microsoft Exchange Server and only mailbox databases can be restored to an RSG or RDB.
To restore a Public Folder Database the two recommended restore options are:
- Restore to original location.
- Dump file only.
For more information related to the above two restore options refer the section Application Restore - MS Exchange Server in the CA ARCserve D2D Online Help.
For information related to Microsoft Exchange Server 2007 recovery storage group (RSG) and Microsoft Exchange Server 2010 recovery database (RDB) refer the following Microsoft TechNet Articles:-