Establishing Sites
Each “island” of high connectivity should normally be broken into separate sites. This not only assists in DC replication, but also ensures that clients receive the closest DC and GC server to themselves.
Note
If your DNS records are inaccurate for a site, clients could be potentially redirected to a DC or GC server other than the one that is closest to them. Consequently, it is important to ensure that all your sites listed in DNS contain the appropriate server host records. This concept is explained more thoroughly in Chapter 10, “Domain Name System and IPv6.”
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