Hi We are running backup of a DB2 database thru the API interface to our TSM 4.1 server on AIX. We are using compression on the client side, but space is reserved in the disk storage pool on the server for the size of the uncompressed data. This makes the space reservation exceed the available space in the pool (200GB). I _know_ this is an old problem, but I believe I've seen previously that there are some parameters you could adjust to change how much space will be reserved. I cannot, however, find anything in the archive or in the places in the documentation where I've looked so far, so I would like to ask if anybody knows of the existence of such parameters and where they would be found and possibly some documentation about them. Regards Peter