Two Central Administration running on the farm isit possible?

Yes, its possible and its a perfect Disaster Recovery solution.. So, how do you do this?

Let says you want to do the DR for the farm and one server has CA running...so what if for your DR purpose you shutdown the CA server....how do you access CA on other server in the farm??? STUCK !!!!

You can get rid of this by setting up CA on other box before you start the DR plan.
Goto - CA- Operations - select the server which dont have CA running- under services click START against Central Administration....THIS is it.... you now have perfect DR solution..Dont forget to setup AAM(Alternate Access Mapping) also.

Any queries post it and I will get back...