Master merge above but you asked for mail merge, hope there’s no type error. If you have feedback for TechNet Subscriber Support, for your response Avi. Mark the replies as answers if they helped.

The master merge tried to run, consuming extra disk space but, there was not enough so it continued to fail triggering the rebuild. Master merge operation fails five times in a row, in this case it appears to have failed because it did not have enough available disk space, the index is considered corrupt and will be deleted and rebuilt. During this operation the overall space used by the index can more than double. It is more efficient for the content index to work with smaller index files and occasionally it will need to merge the smaller files into the overall Index in an operation called

However, the content indexes for various copies of a database should be close in size so you should expect the Index currently crawling toĮventually be similar in size to the Index on the passive copy. The content index size is typically 10-20% of the database size although, this can vary greatly.

Merge a 2011 and.2016 outlook identity