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    Rack Requirements for an EX9208 Switch

    The EX9208 switch can be installed in a rack. Many types of racks are acceptable, including four-post racks and open-frame racks. Figure 1 shows open-frame rack installation.

    Rack requirements consist of:

    • Mounting bracket hole spacing
    • Rack size and strength
    • Rack connection to the building structure

    Table 1 summarizes rack requirements and specifications for EX9208 switches.

    Table 1: Rack Requirements and Specifications for an EX9208 Switch

    Rack Requirement

    Guidelines

    Rack size and strength

    • Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association (http://www.eia.org) .
    • With the use of adapters or approved wing devices to narrow the opening between the rails, the switch fits into a 600 mm-wide rack or cabinet , as defined in the four-part Equipment Engineering (EE); European telecommunications standard for equipment practice (document number ETSI EN 300 119) published by the European Telecommunications Standards Institute (http://www.etsi.org).
    • The rack rails must be spaced widely enough to accommodate the switch chassis's external dimensions: 14.0 in. (356 mm) high, 27.75 in. (705 mm) deep, and 17.5 in. (445 mm) wide. The spacing of rails and adjacent racks must also allow for the clearances around the switch and rack that are specified in Clearance Requirements for Airflow and Hardware Maintenance for an EX9208 Switch.
    • In general, a center-mount rack is preferable to a front-mount rack because the more even distribution of weight in the center-mount rack provides greater stability.

      For instructions about installing the mounting hardware, see Installing a Mounting Shelf in a Rack or Cabinet for an EX9208 Switch.

    • The chassis height of 14.0 in. (35.6 cm) is approximately 8 U. A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association. You can stack five EX9208 switches in a rack that has at least 48 U (84 in. or 2.13 m) of usable vertical space.
    • The rack must be strong enough to support the weight of the fully configured switch, up to 163.5 lb (74.2 kg). If you stack five fully configured switches in one rack, it must be capable of supporting up to 818 lb (371.4 kg).

    Mounting bracket hole spacing

    The switch 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 to fasten to holes spaced at those distances.

    Rack connection to the building structure

    • Secure the rack to the building structure.
    • If earthquakes are a possibility in your geographical area, secure the rack to the floor.
    • Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.

    Figure 1: Installing an EX9208 Switch in an Open-Frame Rack

    Installing an EX9208
Switch in an Open-Frame Rack

    Published: 2013-04-02