Load records ondemand

Hi, i have a problem.

I have 20000 records to load in a datatable, but not at once.
I create a table with first 10 records, and - when i click on "next page" - i would like to load the next 10 records.

Initially the "aaData" array contains only 10 records.. my question is: how to set the paginate if initially don't load all record?


Thanks