This is helpful and, importantly, recent enough to be useful for today's technologies.
God I wish someone, somewhere would write a "best practices for backing up DFS-R" guide. Sure, you see lots of "it can be slow" but there seems to be nobody actually tell us how best to address the issue.
With DFS-R services started I'm facing 2.6TB backup times of nearly a week using BE. With W2k8's NTBackup it's down to 24 hours - but that's not possible to use at all when the disks are above 2TB. What an utter nightmare.... :(