WOJTEK

Data Protection Manager (DPM) relies heavily on the Virtual Disk Service (vds.exe).
As your backup sizes grow and uptime increases it’s not unusal for VDS to consume all free memory, adding more RAM to the DPM server just delays the inevitable.

With a bit of hunting I found the following symptoms and related hotfix 958387.

Scenario 1

A memory leak occurs in the Virtual Disk Service when an application uses the Virtual Disk Service to enumerate disk resources. In this scenario, you notice that the memory consumption of the Virtual Disk Service (Vds.exe) increases continually.

So far so good… here’s hoping the issue is long gone

Wojtek Data Protection Manager, Server 2008, Windows