This compression suggestion sounds interesting. I'm already quite at the limit with deleting unused files etc. I'm just wondering whether compressed files will be accessible a lot slower than uncompressed ones ?

Regards, Ulrike

> ... > There is another trick to decrease space, which you should try: use the > option COMPRESS=YES. That might reduce your dataset-sizes to less than 50%. > If you have SAS V8, you can try COMPRESS=BINARY; that is more efficient. > The only problem is: you cannot direct access obs if the dataset is > compressed. But there is normally no situation where you need it!