DASD Billing › General Information › Elapsed Mode

Elapsed Mode

With MODE=ELAPSED a data set is not charged for a day of occupancy until it exists on the volume one full day. The period of occupancy (item 2 previous) is computed by counting the number of days from the current run date back to one of three dates described below, whichever is most recent.

• The date of the last previous billing scan
• The creation date of the data set,
• A BEGIN= date supplied on the billing command.

CA Disk assumes that the current space occupancy has existed over the period computed. The advantage of ELAPSED mode processing is that a user gets billed for DASD space only after the data set exists for a full day. Disadvantages include that transient data sets do not ever get billed, and you must run two billing steps on the first day of each cycle, one to complete the last cycle and one to start the next. When using this mode, watch for data sets that are deleted and reallocated each day. Depending on the time of the billing run, they can never have charges accumulated for them.