Exchange Server Storage Group contains one or more public and mailbox stores, depending on the size of organization and Exchange Server version in use. All the uncommitted transactions for Storage Group are logged in transaction logs. The Exchange Server might start behaving abruptly and logging unusual entries if any of these components get corrupt. In addition, you cannot backup a corrupted Exchange database. To repair the database, you should try running Eseutil utility, in case no copy of the database exists. However, for non-destructive repair of database, it is suggested to make use of third-party Exchange Server Recovery utilities.

For example, when you try to create Information Store backup in your Exchange Server, it fails and you receive 0xfffffea9 – 0xa000fea9 (2684419753) error. When you view the error log, it shows the below entries:

\\SERVER NAME\Microsoft Information Store\Storage Group\Mailbox Store(Exchange Server)” is a corrupt file. This file cannot verify.

\\SERVER NAME\Microsoft Information Store\Storage Group\Public Folder Store(Exchange Server)” is a corrupt file. This file cannot verify.

\\SERVER NAME\Microsoft Information Store\Storage Group\Log Files” is a corrupt file. This file cannot verify.

Cause

These errors can occur due to one of the below possible reasons:

  • Exchange Server Information Store is also being backed up by another backup utility at the same time
  • The backup process is scheduled to run exactly when Exchange Maintenance is
  • Exchange Server database is corrupt

Solution

To solve the described problem, you should try the following measures:

  • Make sure that no other backup process is running at the same time
  • Disable the maintenance task running for MDB
  • If the above measures fail, the database might be corrupt. Repair the damaged database using Eseutil utility. You can use /p switch to repair the database.

If a valid database backup is present, you should use it instead of using Eseutil /p utility as this can cause corrupted pages to delete. Another safe database repair option is to use Exchange Server Repair tools.

Exchange Server Recovery software are highly advanced tools, which use powerful scanning algorithms to repair the damaged Exchange database. Such utilities provide you graphically rich user interface and hence, are easy to implement.

Stellar Phoenix Mailbox Exchange Recovery is a powerful utility to provide systematic repair for corrupted Exchange databases. It supports Exchange Server 5.5, 2000 and 2003. The tool can perform safe Exchange Recovery for all database objects and extracts user mailboxes in individual PST files.