DPM 2010 Protecting Exchange 2010 DAG in a Single Site
Ctrl P – The Data Protection Manager Blog! : DPM 2010 Protecting Exchange 2010 DAG in a Single Site.
A very good blog post on using DPM to backup Exchange 2010 DAGs. They cover JBOD vs RAID for the DPM server itself, Point in Time recovery for lagged copies vs DPM and a few reasons why you should consider DPM.