http://blogs.technet.com/b/fmustafa/archive/2010/11/27/storage-calculators-for-system-center-data-protection-manager-2010.aspxDPM 2010 administrators can use these .xlsx storage calculators to aid in sizing the DPM storage pool - per workload being protected. there is a specific calculators for Hyper-V, SharePoint and Exchange environments. Download from Source .en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)