The explanation of this states..
"There are many ways to get your data into DataTables, and if you are working with seriously large databases, you might want to consider using the server-side options that DataTables provides. With server-side processing enabled, all actions that DataTables performs (such as paging, searching and ordering) are handed off to a server where an SQL engine (or similar) can perform these actions on the large data set (after all, that's what the database engine is designed for!). As such, each draw of the table will result in a new Ajax request to get the required data."
This is just not true, when looking at the resulting SQL output it appears all records are returned to the client then sorted and paged?