Resource Availabilities

Availabilities for resources (process participants or applications) specify how many resources are simultaneously available in a specific interval.

Specifying Availability Distributions

Availability distributions for resources can be specified by three different curves in the properties page Simulation > Availability in the property dialog for participants or applications:

• The Availability specified the total, long-term daily availability rate. A value of e.g. 10 represents 10 simultaneously available resources. This way you can specify long-term staff evolution or server configurations for parallel access of services. The slider value is interpreted as percentage. This means to get the actual availability value you have to multiply the percentage value divided by 100 with the value displayed in the diagram.
• The Business Calendar specifies whether resources are available at a specific calendar date. This way you can different availabilities (or unavailabilities) of individuals on weekends and other holidays as well as unavailabilities of applications e.g. because of maintenance tasks being performed. The slider represents the actual value.
• The Daily Distribution describes how resources are available over the day. Using this parameter you can demarcate e.g. lunch breaks or regular business hours of employees. The slider represents the actual value.

Long-term availability, calendar-based availability distribution and daily distribution are multiplied to obtain the resulting availability, whereby the calendar-based values and daily distribution are relative values. The daily distribution is always adjusted to an integral value of 100%.

For details on the modification of the availability curves see Working With Curves.

Behaviour

You can also specify the efficiency rate in the properties page by selecting Simulation > Behaviour.