July/August/September 2021 I 43
FIGURE 4: Typical EDC containers. They are not the same
as modular-built EDCs.
Containers
Edge data centers and edge equipment come in varied
forms with varied functionality. Containerized data
centers (those built in a shipping container) are easy
to deploy, save onsite construction costs, and are
pre-engineered for specific power and cooling require-
ments. Think data center in a box. These units are
deploying at the base of cell towers to provide back-
haul services and provide edge services. Quite often,
they are dropped in with the expectation of supplying
edge services. Downsides include that they are, in fact,
shipping containers and are fixed in size. Shipping
containers may not be viewed in an aesthetically
positive light for some implementations (Figure 4).
These ISO containers are limited by code in size, and
the durability and strength are designed to protect the
container while shipping, not necessarily the contents.
They are 8'-6" or 9'-6" tall, but are only 8' wide. This width
can be restrictive considering most cabinets are 4 feet
(≈1.2 m) deep and require 3 feet (≈0.91 m) in front
to practically move equipment in and out of racks,
plus at least 3 feet (≈0.91 m) clearance distance is needed
in back for cooling, cable plant access, and meeting
Occupational Safety and Health Administration (OSHA)
and National Fire Protection Association (NFPA) guide-
lines. It is a snug fit to work in these units, but in the
areas where they are deployed, one does not expect
to be in there often. Shipping containers may not
be viewed as a building by some municipalities.
