Good or Bad? - Putting DHCP onto an existing cluster

I'm implementing a centralised DHCP service and need to decide between the following:

1. Implement a split scope DHCP service on 2 new dedicated servers

or

2. Use my existing File and Print cluster to host the DHCP.

Option 2 means not needing additional servers plus it is clustered, but is this bad practise to put it on a cluster that is used for File and Print also?

Also, I'm told by my network provider that they will need the Help Address for my DHCP service. Would this be the Virtual IP on the cluster? How would it work if you have to separate DHCP split-scope servers?
AWGMorrisonAsked:
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araberuniConnect With a Mentor Commented:
DHCP is vital infrastructure server. Go for a separate DHCP cluster. Do not configure DHCP in existing cluster.
Virtual IP of the DHCP cluster would be IP Helper Address for Network.

I reckon, cluster is better option than split-scope DHCP servers. From network point of view, you will have two ip helper address in Cisco L3 switch or core switch if you use split-scope servers. That means Client request ip to both dhcp servers, it will take extra few seconds for communications.  

DHCP cluster http://microsoftguru.com.au/2011/02/27/configure-microsoft-fail-over-cluster-for-dhcp-servicesstep-by-step/
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