The following Exchange 2013 rror sometimes forces DAG failover. Waht's the matter?
Log Name: Application
Event ID: 906
Task Category: Performance
Information Store - (52748) A significant portion of the database buffer
cache has been written out to the system paging file. This may result in severe performance degradation.
See help link for complete details of possible causes.
Previous cache residency state: 100% (3936 out of 3936 buffers) (48 seconds ago)
Current cache residency state: 0% (30 out of 6425 buffers)
Current cache size vs. target: 99% (1359.738 / 1365.031 MBs)
Physical Memory / RAM size: 131043.574 MBs