STIS Design Reference Mission and Ground System Volume Requirements

In this ISR we describe a scenario for the expected useage of STIS. From that scenario and from our current expectations for the STIS pipeline calibration software we derive estimates of the expect rate of STIS exposures (100/day), datasets (50/day) downlink volume (2.3 Gbits/day), archive volume (3.3 Gbytes/day), CPU requirements (500 calwfpc2s/ day) and calibration reference file OPUS on-line storage volume (3 Gbytes).