() Corruption was detected while restoring from backup logfile . The failing checksum record is located at position . Data not matching the log-file fill pattern first appeared in sector . This logfile has been damaged and is unusable.

Details
Product: Exchange
Event ID: 463
Source: ESE
Version: 6.5.6940.0
Component: Microsoft Exchange Extensible Storage Engine
Message: <process name> (<process id>) <storage group name>Corruption was detected while restoring from backup logfile <file name>. The failing checksum record is located at position <value>. Data not matching the log-file fill pattern first appeared in sector <value>. This logfile has been damaged and is unusable.
   
Explanation

Corruption was detected while restoring from a backup log file. This log file is damaged and is unusable.

   
User Action

Restore the log file from a backup copy.

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