Exchange Server is the server side application from Microsoft to create a collaborative messaging environment. It is made of various components, and Exchange Server Information Store is a significant one among them. All the database components work together to perform required operations and keep Exchange Server up. However, there are several factors that can damage the Exchange Server components and may make it unusable. This behavior renders your Exchange Server database (EDB file) inaccessible and cause severe data loss. To recover lost data at this point, you must go for Exchange Recovery solutions, if a valid backup is not available.

When Exchange Server database corruption takes place, Exchange Server Information Store is the most commonly affected components. Microsoft Exchange Server Information Store comprise of the below four database files:

1.Priv1.edb 2.Pub1.edb 3.Priv1.stm 4.Pub1.stm Both stored and in-process non-SMTP messages are held by Priv1.edb file. SMTP messages are stored in Priv1.stm file. Public store folder for non-SMTP messages is stored in Pub1.edb file and for SMTP messages is stored in Pub1.stm. Generally the database corruption includes either of EDB files. Exchange Server Information Store corruption is usually indicated by the below symptoms:

1.Information Store Service doesn't start. 2.You can't stop Information Store service. 3.Information Store service stops responding. 4.Exchange clients can not send or receive mails. 5.You receive the below error, if you restore Exchange Server database from offline backup, and run Isinteg.exe (Information Store Integrity Checker) utility:

“Error 4294966746: JET_errDatabaseInconsistent”

6.You come across the following error message when you attempt to Mount mailbox store in Microsoft Exchange System Manager:

“Unable to Mount the Mailbox Store with error c104173c 'The Information Store is Busy'”

Resolution

You can perform Microsoft Exchange recovery by resolving this problem, using the below steps:

1.Restore database from backup. 2.Use Exchange Server database consistency adjuster. 3.Run Exchange Directory Service Integrity Checker. 4.Merge database using ExMerge utility. If the above methods do not work, it becomes essential to repair and restore the damaged Exchange Server database using third-party Exchange recovery software.

The applications are specifically designed to carry out in-depth scan of entire EDB file and extract all inaccessible data from it. With simple graphical user interface, the Exchange database recovery process is quite simple with these tools.

Stellar Phoenix Mailbox Exchange Recovery is the most advanced and powerful utility to effectively handle all EDB corruption scenarios. The Exchange Server Recovery software works well with Microsoft Exchange Server 2007, 2003, 2000, and 5.5. It restores all inaccessible EDB file objects, such as emails, notes, contacts, tasks, journal, and calendar entries.

Source: http://ezinearticles.com/?Recover-Exchange-Server-Information-Store-in-a-Single-Site&id=4314701