For now, just a few pieces of information:
If you are an average user, the University stores your IP address and log files on its servers for 180 days. The University intends to shorten this period to 30 days. The given retention period enables the University to analyse attacks on its servers and to block the users in question. If you are an editor and you can upload contents on your own, the retention period is 180 days. The purpose of a longer retention period is to enable finding and correcting errors which justify the data processing.