DO
Size: a a a
DO
PK
V
DO
r~
DO
PK
V
PK
DO
DO
EG
DO
GL
While it is unfortunately quite common, servers for a zone should certainly not all be placed on the same LAN segment in the same room of the same building - or any of those. Such a configuration almost defeats the requirement, and utility, of having multiple servers. The only redundancy usually provided in that configuration is for the case when one server is down, whereas there are many other possible failure modes, such as power failures, including lengthy ones, to consider.
DO
GL
IS
EG
R
DO