DNS hardware advice (newbie)

[john]

(I'm hoping this is an appropriate forum...)

I'm setting up DNS (BIND, natch) for our sites. This is 
enterprise-level, and we're getting about 250K hits a day peak - right 
now, at least. This will probably double by the end of the year.

My question: how much horsepower is enough (in terms of CPU and RAM, and 
whatever else matters here)? What's a reasonable plan for hardware? I'm 
also running Apache - I'd like to utilize the machines as fully as 
possible, so if I could do both Apache and DNS on the same machine(s), 
even if only for backup purposes, that'd be nice.

Thanks,
John

----
We live only to discover beauty. All else is a form of waiting. - Kahlil Gibran
john at coloured.net - http://coloured.net
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