() The patch page read from the file “” at offset for bytes failed verification due to a page checksum mismatch. The expected checksum was and the actual checksum was . The read operation will fail with error . If this condition persists then please restore using an earlier backup set.

Details
Product: Exchange
Event ID: 479
Source: ESE
Version: 6.5.6940.0
Component: Microsoft Exchange Extensible Storage Engine
Message: <process name> (<process id>) <storage group name>The patch page read from the file “<file name>” at offset <value> for <value> bytes failed verification due to a page checksum mismatch. The expected checksum was <value> and the actual checksum was <value>. The read operation will fail with error <error code>. If this condition persists then please restore using an earlier backup set.
   
Explanation

The patch file specified in the message is corrupt. This may have occurred during backup or restore, and may be due to a hardware problem.

   
User Action

Review the event log for hardware-related messages. After the hardware problem is resolved, perform backup or restore again.

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