Tandem Capacity Model (TCM) Manual

WARNING! In the Excel 2003 version of TCM, the Custom Directory name text
may appear corrupt.
4. When you finish, click Open.
TCM shows the Capacity Baseline—Actual screen. You are now ready to model scenarios.
Figure 23 (page 88) shows a sample Capacity Baseline—Actual screen.
Modifying the Planning Unit
Often a capacity planner needs to model transaction throughputs in units other than transactions
per second (TPS). The planning unit for throughput can be changed by entering another value in
the Planning Unit field on the Capacity Baseline—Actual screen. You can model transactions in
seconds, minutes, hours, days, or months.
To modify the planning unit:
1. Select the highlighted Planning Unit field on the Capacity Baseline—Actual screen.
2. Enter the new unit of time (sec, min, hour, day, month) and press Return.
3. Select Options > Calculate Now (function key F9). To finish entering your data, you must press
Return before selecting Calculate Now or pressing a function key.
Working With an Existing Performance Model 89