Tandem Capacity Model (TCM) Manual

Printing Charts
TCM creates its charts in black and white. TCM automatically produces the chart to be printed on
a black and white printer.
To print a chart:
1. Create a chart of the Planning Timeline model.
2. Update the Performance model data by selecting Options > Calculate Now.
3. Once the chart appears on the screen, select Print option under the Print tab.
Saving the Model
To save the Performance model with its existing name:
1. Select File > Save As.
2. A dialog box containing a list of files in the Excel session appears.
3. To save the model in a location other than the TCM custom directory, click the Browse button
next to the Performance model name.
4. Ensure that the check box next to the Browse button of the Performance model is checked.
Click Save to save the model.
To save the Performance model with a different name:
1. Select File > Save As.
2. A dialog box containing a list of files in the Excel session appears.
3. Type a new name (except TCM.spm) for the model.
4. To save the model in a location other than the TCM custom directory, click Browse.
5. Ensure that the check box next to the PM model name is checked. Click Save to save the model
under the different name.
NOTE: Any Timeline charts created in the TCM session are saved as a part of the Performance
Model.
Deleting Transactions or Applications
As a TCM administrator, you can use TCM to model what happens to a system if an application
or certain transactions of an application are moved to another system. For instance, if you have
both online and batch applications running on the same system, you might want to estimate the
effect of moving batch activity to its own system.
Although you can accomplish the same results with different methods using the options of TCM,
one method is recommended. Collect all Measure statistics on the current system and then create
a WA model that apportions the Measure data to transactions. Make sure there are no Z categories
and that no Measure data is ignored.
To model the removal of an application or a transaction, simply zero out the application’s or
transaction’s throughput (or transactions per task). By doing this, you basically nullify the effect of
the application or transaction on the system. To zero out the application’s or transaction’s throughput,
type zero (0) in the Plan column for the appropriate transactions in the Consumption model and
select Options > Calculate Now. To finish entering your data, you must press Return before selecting
Calculate Now or pressing a function key.
Merging Performance Models
Refer to “Merge Performance Models” (page 168).
Printing Charts 95