One to Many Replication, or Can I do This?

Hello,

I have two 6510e on campus. One of them is the primary (in our primary data center)  and the other is in our backup data center (also on campus) and is just there to replicate to. It's a fairly simple setup and it works wonderfully. Now the wrench: it works so well that people are starting to ask if there is a way to have a third unit (maybe a PS6610E, not sure yet) sit in our DR site and replicate the secondary unit.

Thanks!