If you have added a disk to the storage pool and it is not displayed on the Disks tab in the Management area, you can rescan the disk configuration to display the disk.
For information on how to add disks to the storage pool, see Configuring DPM (http://go.microsoft.com/fwlink/?LinkId=91852).
To update the storage pool data
In DPM Administrator Console, click Management on the navigation bar, and then select the Disks tab.
In the Actions pane, click Rescan. The current disk data is displayed.