Will the required applications for running a text based game require a lot of disk space?

I know the language needed for a text based game and have planned out my game and would just like to know where i start (what i need)?

Those sort of things are generably scabable (or at least keep that in mind when you make it).

It varies too much to say. Unless you're doing hundreds of cron jobs, it only matters how many people are using it. It'll probably be very database-based, you could offload things like user pictures to imageshack. I would expect bandwidth would be a problem before cpu usage before disk space, but it can depend on things like use of sql.