With DPM 2007 Feature Pack (KB949779), we have added support for media co-location. With this feature, you can achieve better tape utilization by co-locating data from multiple protection groups with similar retention range. This feature is disabled by default. You can use following PowerShell commands to enable and disable tape co-location.
Enable Tape co-location:
Set-DPMGlobalProperty -DpmServer <DPM Server Name> -OptimizeTapeUsage $true
Disable Tape co-location:
Set-DPMGlobalProperty -DpmServer <DPM Server Name> -OptimizeTapeUsage $false
You can verify the status of tape co-location feature (Enabled/Disabled) from Library Management tab of DPMUI.
The Feature Pack can be downloaded from following locations.
If you have multiple storage groups with the same data retention policies, you can now colocate the data
How do i go about sharing the library with my other DPM server?