Backup Microsoft Exchange

[Rob Bosch]

The main reason I recommended using vshadow is that you don't have to create
the BKF file so the space used is only what the shadow copy requires (300MB
minimum).  You can delete the shadow copy when you are done so no meaningful
space impact on your drive.  The shadow copy will also be very fast,
normally less than 20 seconds on a 70GB data store, to create the shadow
copy.

Of course, either will work and ntbackup is a much easier way.
 
Rob