An error occurred while writing to the database log file of storage group “”. Attempting to unmount all databases in this storage group.

Details
Product: Exchange
Event ID: 9558
Source: MSExchangeIS
Version: 6.5.6940.0
Component: Microsoft Exchange Information Store
Message: An error occurred while writing to the database log file of storage group “<name>“. Attempting to unmount all databases in this storage group.
   
Explanation

This event message indicates that a disk error has occurred when writing a storage group log file. A disk-full condition on the disk containing the log files probably caused this error.

   
User Action

Check the disk for problems.

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