Why does Provisioning Services with cache on server help the Radiology group maintain changes in their desktops?

When Provisioning Services is configured with 'cache on server,' all write operations from the streamed virtual desktops are directed to and stored on the PVS server's disk, or shared storage it manages. This centralizes the storage of user and application changes, allowing for management and potential persistence across sessions.

Profile Manager is a separate component used for managing user profiles, providing a consistent user experience, but it is not directly responsible for how PVS with cache on server maintains general desktop changes.

While caching on the PVS server can indeed reduce storage IO on the XenServer local storage by offloading writes, this is a performance benefit and not the direct technical reason why changes are maintained.