Microsoft Exchange Server is the most important application to create a collaborative messaging environment. It stores all of the critical user information in Exchange Server Public Information Store. The Exchange Server database contains a separate mailbox for every user and an exact copy of the mailbox is stored on the user hard drive in the form of OST file. In some cases, the Exchange Server database may get damaged due to virus attack or other similar reasons and you need to opt for Exchange Server Recovery to sort out this scenario.Sometimes, when you attempt to mount the Exchange Server database (EDB file), you might come across any of the following events in the Application Event Log of Exchange Server:
Event Type: Error
Event Source: ESE
Event Category: General
Event ID: 505
Description: Information Store (2028) An attempt to open the compressed file "drive:\Exchsrvr\MDBDATA\priv1.edb" for read / write access failed because it could not be converted to a normal file. The open file operation will fail with error -4005 (0xfffff05b). To prevent this error in the future you can manually decompress the file and change the compression state of the containing folder to uncompressed. Writing to this file when it is compressed is not supported.
Or
Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 9519
Description: Error 0xfffff05b starting database "First Storage Group\Mailbox Store (EXCHANGE)" on the Microsoft Exchange Information Store. Failed to attach to Jet DB.
This issue generally occurs when you upgrade to Exchange Server 2000 Service Pack 3 or later and the Information Store database is compressed using NTFS (New Technology File System) file system compression. Under some situations, NTFS compression may damage the Exchange Server database like when the EDB file exceeds 4 GB size. In such cases, Exchange Repair is required to work around the issue.
Exchange Server 2000 Service Pack 3 and later do not allow NTFS compressed information store to mount. The files are managed by Extensible Storage Engine (ESE) that needs sector independence for log-based recovery that is not allowed in compression.
This entire behavior of Exchange Server corrupts the EDB file and you are required to repair and restore is using Exchange Recovery software to access your critical data. These software can recover all of the Exchange Server database objects.
Stellar Phoenix Mailbox Exchange Recovery is the most advanced Exchange Repair software that works in most of EDB corruption cases. It works well with Exchange Server 2003, 2000 and 5.5. This software is compatible with Microsoft Windows 2003, XP and 2000.
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