Sun Enterprise 220R Manual De Instalación Y Montaje página 40

Rack Enclosure Feature
Vertical Mounting Rail
Requirements
Doors and Panels
EMI Requirements
Anti-Tilt Protection
Minimum Service
Access
Fire Containment
en-36 Sun Enterprise 220R Setup and Rackmounting Guide • December 1999
Requirement
The rack must have two pairs of vertical mounting rails (one pair
in front, one in back) that conform to the EIA (RETMA) standard
for mounting hole spacing.
Left-side-to-right-side rail spacing (mounting hole center to
mounting hole center) for front and rear rails must be 18.3 inches
(46.5 cm).
Front-to-rear rail spacing must be at least 26.875 inches (68.26 cm)
and not more than 34.875 inches (88.5 cm) from the outside face of
the front rail to the outside face of the rear rail.
Front and rear vertical rail mounting faces must be parallel to
each other and to the front plane of the rack.
If you are using a Sun expansion cabinet, you can remove the
front door and the side panels to increase access to the system.
Otherwise, see the instructions provided with the rack enclosure.
Electromagnetic interference (EMI) shielding requirements are
met by the system chassis and metal side panels, which remain in
place when the unit is rack mounted.
The rack must be bolted securely to the floor or equipped with a
sturdy and extendable anti-tip leg. You must prevent the cabinet
from tilting forward when one or more systems or devices are
fully extended out the front of the rack.
An area not less than 3 feet (1 meter) deep and 6 feet (2
meters) wide must be available in front of the rack for
installation and service access.
When fully extended on its mounting rail slides, the system will
protrude 29.75 inches (75.6 cm) forward of the rack's front vertical
mounting rails.
The rack enclosure must meet Underwriters Laboratories, Inc. and
TUV Rheinland of N.A. requirements for fire containment.