I have an organization that spans 11 sites. I want to implement DNS,
on
NW6, for local servers. The DNS design I am looking to implement will
have
a zone created for each site (ie. ny.mydomain.com, dc.mydomain.com,
etc...)
The biggest sites are NY and DC. Each site has a DHCP server that
will hand
out each sites' respective domain suffix.

Should I create a DNS server at every site, create each zone as a
primary
zone, and select the local server and NY server as the authoritative
servers?

Or do I make a single primary zone, mydomain.com, and create all other
zones
(ny.mydomain.com, dc.mydomain.com, etc...) as secondary zones. With
that, I
will make the DNS server in NY the authoritative server for
mydomain.com and
the master for all secondary domains. All secondary domains will have
its
local server and the NY server as authoritative servers.

Any suggestions will be greatly appreciated.