Event Type: Error Event Source: MSExchangeIS Event Category: General Event ID: 9518 Description:Error 0xfffffb40 starting Storage Group /DC=COM/DC=TEST/CN=CONFIGURATION/CN=SERVICES/CN=MICROSOFT EXCHANGE/CN=MICROSOFT/CN=ADMINISTRATIVE GROUPS/CN=AG1/CN=SERVERS/CN=SERVER1/CN=INFORMATIONSTORE/CN=FIRST STORAGE GROUP on the Microsoft Exchange Information Store.
This behavior occurs because the Extensible Storage Engine (ESE) attempts to bring all databases in a storage group to a consistent state during recovery. To accomplish this, ESE keeps track of all databases in the log files for the storage group. If a database is missing, ESE returns the error -1216, and does not start the storage group.
If you run into this error, there two possible solutions to resolve this issue.
Find the missing database files, and place them in the proper locations. If this is not possible, you need to go to Solution Two.
If the missing database was deleted or lost, restore the missing database from a backup. While you are restoring this database, you can mount and access the other databases in the storage group by completing the following steps:
Run eseutil /r Log Base Name /I. This allows ESE to take the databases that are present to a consistent state while ignoring the missing databases. After you run this command, any databases that are not present will require restoring from backup. You can specify the location of the log files with the /l option and the location of system files with /s option.
Mount the databases in the storage group that are now present and consistent.
Allow the users on the running database to access their mail.