Load balancing indexing (or how can I run 2 drb servers?)

Hey guys,

I have a website that is fairly large and when multiple items in the
index need to be re-indexed it can regularly pin CPU close to 100% for
many, many minutes until all of the references and items have been
re-indexed.

My question is, I am going to be needing to scale this out soon but I am
not entirely sure the best way.

Is it even possible to have 2 drd servers interacting with the same
index? I doubt it… so then I suppose my question is, would it be
possible to just setup remote workers? I am still confused by that
concept as well…

Any info you guys can provide would be fantastic!