Protecting a non-domain server with DPM

To protect a server outside the DPM's domain:

• First install the agent manually on the server, copy the installer from C:\Program Files\Microsoft DPM\DPM\agents\RA
• Add a host entry on both the DPM and the server to be protected to allow name resolution of each other
• On the server to be protected, navigate to C:\Program Files\Microsoft Data Protection Manager\DPM\bin and run this command
• SetDpmServer.exe -dpmServerName backup -isNonDomainServer -userName svcdpm

• From the DPM console go to the management tab, click the Install action and choose to "Attach agents" to a "Computer in a workgroup or untrusted domain"
• Specify the name of the server and the username you created with the SetDpmServer command

• The server now should appear in the Agents list

The selected tapes cannot be erased because they belong to protection groups

If you try to erase a tape that belongs to a protection group you receive this error

Use the script below to mark the tape as "Free (containts data)" and then you can erase it

Optimize DPM Tape Usage by enabling Data Co-Location

In DPM 2010 if you have multiple protection groups you can share tapes among them allowing recovery points from different protection groups to be written on the same tape.

Run the following command in DPM Management Shell to enable Data Co-Location:

DPM 2010 might be wasting storage pool space if you don't calculate data size of protected members you add

I was configuring some backups when I noticed that the available storage was decreasing rapidly and I don't have that much data yet
I went back to the check the disk allocation for the new members I created and I found that DPM has allocated several gigabytes to backup some hundred megabytes and retain just a few days.