It's current storage capacity is 920 GB with 1024 device unit addresses. These volumes are currently divided into 'pools' which are allocated to certain types of usage.
Growth is generally incremental, based on processing demand.
The rise in volume usage in February of 1999 was caused by the onset of Y2K testing. As of January 2000, this space was reassigned to the test machine to improve development testing. The space assigned to the QDB Data Warehouse will be released in June 2001 when the migration to SQL Server is completed. The project to migrate dataset from tape to disk is continuing. This will allow for more efficient access to and processing of these datasets and will further reduce tape usage.