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C120-H007-05EN 27
3.3 Precautions in Preparation of an Equipment Layout
Even if a single device has multiple functions, it should be grouped according to the
degree to which it can be run with or without manual intervention.
Generally, devices may be divided into the following groups:
z Consoles for visual monitoring
z I/O devices requiring interchangeable and portable storage media
z Connection equipment that has a long service life and seldom requires replacement
z Data processing devices (such as CPUs and file units) that normally do not require
manual operation
Figure 3.1 shows a conceptual view of grouping.
Figure 3.1 Concept of units operational grouping
(2) Concentration of small equipment
Concentrate small devices, such as modems and LAN units, on shelves.
For a large number of small, floor-mounted devices, such as display controllers, LAN
controllers, link adapters, and optical channel adapters, consider erecting a single
cabinet to house them all.
(3) Entrance and passage
Lay out the equipment to facilitate human traffic and the movement of supplies and
storage media through the entrance. Allow also for human traffic and the movement
of media, equipment, and instruments when locating the passages in the room.
(4) Maintainability
Provide service clearance around server systems, air conditioners, and power supply
facilities to allow access for inspection or maintenance.
File units
CPUs Line units
I/O devices
Consoles