Calendar Confusion - Project vs Resource Confusion

[irish_archer68]

Hello and thank you in advance for any insight you can shed on my
question/confusion. I have a project with a Project calendar with 6
holidays - including July 4, 2008. A task with 3 resources spans the
entire 2008 year. All 3 resources have a resource calendar based on
the out of the box standard calendar - which contains zero holidays.

When I publish this project to Project Server 2007, the duration of
this long task gets reduced by 6 days - seeming to ignore the 6
holidays included in the Project Calendar.

When I change the resource calendars to be based on the same project
calendar, the duration goes back to what I expected.

Can someone explain to me what is occuring? I would think exceptions
in the Project calendar would over ride any availbility in individaul
resource calendars. I am confused by the behavir though.

PLEASE HELP....

 

[Paul Conroy]

It's important to understand that there are three calendar types

Project, Task & Resource

Each are given an order of precedence over the other, so Resource calanders
have the highest priority, then Task and finally Project. Project will
always try to schedule tasks as eariler as possible whilst taking any
constraints/calendars into consideration.

When you think about it, it makes complete sense.

If a resource is not available to service a task, then there's no point in
having the tasks calendar with a higher priority then the resource calendar.
The same applies for the relationship between Project & Tasks calendars

In your scenario, the resources are able to service the tasks in accordance
with their calendar which takes priority over the project calendar.

HTH

Paul