There are cache files for each monitored instance at C:\Program Files\Quest Software\Diagnostic Server\Agent\data\caches on a default install of SOSSE. If one navigates well below the folder with the name of the instance being monitored, you find a file by the name of ehcache-disk-store.data that has been growing for almost all of our monitored instances. This has cause a problem with consuming all of the space on the C: drive. There was one file alone that was over 600 MB. We have been able to sidestep the problem of a full C: drive by stopping the monitoring of a specific instance, delete the connection, delete the folder for that instance, then recreate the connection and restart monitoring. This is not a sustainable process.
The only files that appear to be growing are the ones associated with SQL instances. For the folders associated with the OS, SSAS, or VMWare don't appear to be problematic.
Any clue as to what is happening and why these files appear to grow uncontrollably.