1. I do not really know what you mean by a "recovery partition". You
cannot really create a recovery partition like the factory recovery
partitions that come with the PCs.
2. What you could do is use the 2GBs for data backup although that
makes limited sense on the same HDD (e.g. when that one goes south).
3. 2GBs is really very little space. I would suggest you just add it to
one of the other partitions.
4. If you really want to develop a recovery strategy, I suggest you
look at the imaging/ghosting options ( 'Ghosting approaches - summary
because of popular demand « How-To Geek Forums'
). But for that you need an external disk of at least 250GBs.