Juniper SRX 5800, Руководство по оборудованию, Страница: 168 / 536

With the use of adapters or approved wing devices to narrow the opening between the rails, the services
gateway can fit into a 600-mm-wide rack, as defined in the four-part Equipment Engineering (EE); European
telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4)
published by the European Telecommunications Standards Institute ( http://www.etsi.org ).
Observe these guidelines:
•
The rack must have sufficient vertical usable space to accommodate the height of the services gateway:
27.75 in. (70.49 cm) high (approximately 16 U). You can stack three services gateways in a rack that is
at least 48 U (89.3 in. or 2.24 m) in height.
NOTE: A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated
Equipment.
•
The location of the rack must provide sufficient space to accommodate the depth of the services gateway.
The chassis depth from the front mounting flange to the rear of the power supply ranges from
23.0 in. (58.4 cm) to 27.8 in. (70.6 cm) depending on the type of power supply installed.
•
The rack must be strong enough to support the weight of the fully configured services gateway, up to
400 lb (182 kg). If you stack three fully configured services gateways, it must be capable of supporting
up to 1,200 lb (545 kg).
Spacing of Rack-Mounting Bracket Holes for the SRX5800 Services Gateway
The services gateway can be mounted in any rack that provides holes or hole patterns spaced at 1 U (1.75
in.) increments. The mounting brackets used to attach the chassis to a rack are designed (as per EIA-310-D
specifications) to fasten to holes spaced at those distances.
Connection to Building Structure for the SRX5800 Services Gateway Rack
Always secure the rack to the structure of the building. If your geographical area is subject to earthquakes,
bolt the rack to the floor. For maximum stability, also secure the rack to ceiling brackets.
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