http://technet.microsoft.com/en-us/library/aa996719.aspx

Paging file size --
Paging file size

Equal to the amount of RAM in the server plus 10 MB
This paging file size recommendation accounts for the amount of memory
needed to collect information if the operating system fails. By default, if
the operating system fails, it will copy everything in memory to a .dmp file.
That file can be examined later to determine the cause of the failure. To be
able to copy everything that is stored in memory, you must have a paging file
size that can hold everything in memory, plus some additional space to gather
the data.

ExBPA reports ---PageFile Size Larger Than Total Physical Memory

The Microsoft Exchange Analyzer Tool queries the Win32_PageFile Windows®
Management Instrumentation (WMI) class to determine the value for the
MaximumSize key. This key represents the current configured maximum page file
size.

The Exchange Analyzer also

Archived from group: microsoft>public>exchange>tools