as a workaround I created a shell script in the systemshell of each node containing the commands to delete all unnecessary files (i.e. the autosupports, logs.000x and so on).
With a Linux client and SSH you can run this script via crontab from the Linux. Unfortunately it works only against a v.8.3 Simulator. A v8.2 dows not allow running the script via SSH (or I did not find the right way 😉 ).
And again unfortunately the crontab in the systemshell itself also does not run this script, for what reasons ever.
So at a v8.2 (or v8.1) you need to run this script manually from time to time.
Although I disabled every autosupport option the simulators create an asup every day which results also in a large space consumption.
If anybody has an other solution or hints please let us know...