some generic BaseX questions

Hi all, * I'm wondering where baseX stores it's database by default and how one can override the location? * What approach is mostly taken to backup the database /and how can I restore it? * What would a production server typically consume in memory? * Did anyone encounter database problems (e.g. corrupt) and what could be the root cause (out-of-memory, ...) ? Basically I'm looking for people who have hands-on experience with using BaseX in a high performance critical production environment and what their experience is so far. Cheers, Robby Pelssers