How to manage EV partitons

I would like to be sure that I am properly managing or EV partitions. We have about 7TB spread over 7 partitons, 1 EV server with about 1100 users. I'd liek to be sure that I am sizing them to maximize performance and storage. Also, what are the options as far as consolidating partitons. Any good info on this is greatly appreciated. Thank you.