high availiblity DNS

[Ramin K]

	I've been reading through the 2000 archives and there hasn't been much 
concrete data on some of the plans we're considering. The closest was the 
April thread titled "Can I run 2 named processes on the same machine".

	We'd like to run three or more boxes each with 4 or more processes of 
named each depending on the max number of requests our platform can deliver 
per instance of named. Right now it appears that named is using somewhere 
110 to 150 MB for it's cache as a sampling across a few of our existing 
servers. We're planning accordingly for the RAM requirements. We have 
Arrowpoint load balancers which can do the port redirection with udp 
packets, though I'm still in the testing phase for this, but supposedly it 
does work.

Has anyone attempted something of this scale and would care to share?

	I'd assume that adding processes would scale almost linearly as long a RAM 
was not an issue, but again if anyone knows better I'd love to hear from you.


Ramin K
Operations Eng.
Netzero Inc.

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