Suggestion

In the above example, using the CDAM Direct Write feature, the user would retrieve two of the 3380s: one to be used for the CDAM datasets, and one for any other purpose. We achieve the reduction in spool size by writing output directly into a compressed format on DASD. The compression rate is between 30% to 70% depending on the type of data being compressed. Therefore, in the above example, we would have one volume allocated for spool, one for the CDAM datasets, and one returned for other purposes.

If one of your objectives is to reduce the size of the spool area and to retrieve some DASD space, you should implement CDAM Direct Write to your batch jobs. For now, find out what the minimum, average and peak utilizations are, and how much space is allocated to the spool area.