Server side pagination involves exiting the Coach and run a page by page retrieval based on the total number of results and the current page number requested so there is a delay in retrieval of every page, its alternative is to load the entire data at once and display it in a client side grid which supports pagination, another alternative is to have ajax calls for each page requested by the pagination controller in the table/grid control.
It depends on what the specific scenario is before you can decide which one of the approach to use
1. If the data is not huge you can load it all at once so that the initial load may take some time but subsequent page requests will not take any time at all.
2. Server side pagination helps when you have a huge data set and you want to make the initial load time minimal.
3. Ajax based pagination takes care of both the issues initial load time since only one page is loaded at the beginning and also you dont have to load the entire data at one go.