Server failover like dhcp?

[Piero Giobbi]

Hi.

I just installed two dhcp 4 server with failover and it works great.  
So great that i want the same for my freeradius server, so i look at  
the wikis. As for what i can figure out there's only a module config  
(sql) for failover? Didn't find anything in the FAQs either. Im not  
using SQL, only files (yes will make it happend when i have the  
time : )), is the failover only possible in SQL?

  What i would like to accomplish is this, if server primary explodes  
the secondary takes over, just like dhcp.


Regards

p