Failover on a large DHCP system

[Nicholas F Miller]

We have a large DHCP instance which is currently running 304 shared- 
network definitions and 677 pools. We would like to implement DHCP  
failover but are a little worried about the overhead needed to  
implement it on such a large DHCP network. Will the servers be  
overwhelmed trying to keep things in sync with so many pools?

Also, can we reload configs without restarting DHCP yet?
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Nicholas Miller, ITS, University of Colorado at Boulder