How to save a solution

Hello , I have a question about how to save a Comsol solution. I did a model in Comsol 4.2 , after 31hs I got a solution , I saved the model but when I opened it again the solution was not there , so I had to run it again and wait another 31 hs !!

1-How can I save the model with the solution ? Like the models in the model library..


2-What are the main features of a computer to run faster the simulations ?

Thanks,