Tandem Capacity Model (TCM) Manual

Figure 46 Planning Timeline Model
CAUTION: Modifying a field erases the formula it originally contained. If you typed over data
in a field, erasing the formula originally contained in the field, you can use the Refresh Formulas
option on the Update tab to reinitialize the formulas in the screen.
Significant Rows
1. Time Increment—Directly Modifiable
Time Increment is the number of months between adjacent periods in the planning timeline.
The initial default time increment is six months.
2. Default Growth Rate—Directly Modifiable
Default Growth Rate is the default growth rate for each period. If you enter a percent sign (%)
in the adjacent cell on the right, the growth rate is expressed as a percentage. Otherwise,
throughput is incremented in absolute transactions. For example, if a default annual rate of
500 is specified in a batch transaction, throughput is incremented by an annual rate of 500
tasks for each time period.
3. Planning Dates—Directly Modifiable
These fields default to the dates established by the Time Increment field but can be changed
to any text string that describes your planning scenario, such as fiscal quarter dates and project
milestones.
4. # CPUs and CPU Type—Directly Modifiable
# CPUs and CPU Type are the chosen number and type of CPUs for any of the Scenario dates
in the Planning Timeline model. Whenever you selects a CPU type, the value of the SW Release
is automatically set to the latest RVU for which this CPU type is supported. Valid CPU types
are listed on the CPU Conversion Factors screen. Initially, the first column values match the
actual number and type of CPUs, as shown in the first date column in the series. Columns 2
through 8 initially match the Actual data, or the Plan data from the Consumption Model
depending on the value of the First Plan Scenario From Consumption Model button. When
you type over any value, the new value automatically propagates to the fields on the right. If
you enter a CPU Type that is not listed in the CPU Conversion Factor screen, a red "?Bad
CPU" value appears in the row between the top and bottom sections of the screen when you
press Calculate Now (F9).
Planning Timeline Model Screen 145