DX and Centera, expanding a pool?

I've currently got a 1TB pool set up for one of my servers being archived by DX. I'm going to reach that limit soon. I'm trying to figure out how I should go about extending that space, I didn't see any centera commands to modify pool size, should I just be creating a new pool and adding that to the media services?

Can someone tell me which direction I should be looking to extend the size available?

Thanks,
Christian