Rack Requirements; Rack Size And Strength; Spacing Of Mounting Bracket Holes; Connection To Building Structure - Juniper SRX 5600 Hardware Manual

Rack Requirements

The device can be installed in a rack. Many types of racks are acceptable, including
four-post (telco) racks and open-frame racks. An example of an open-frame rack is
shown in Figure 23 on page 40.
The following sections describe rack requirements:

Rack Size and Strength

The device is designed for installation in a 19-in. rack as defined in Cabinets, Racks,
Panels, and Associated Equipment (document number EIA-310-D) published by the
Electronics Industry Association (
With the use of adapters, the device is designed to 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 (
Use approved wing devices to narrow the opening between the rails.
The rack rails must be spaced widely enough to accommodate the device chassis's
external dimensions: 14.0 in. (35.6 cm) high, 24.5 in. (62.2 cm) deep, and
17.45 in. (44.3 cm) wide. The spacing of rails and adjacent racks must also allow for
the clearances around the device and rack that are specified in "Clearance
Requirements for Airflow and Hardware Maintenance" on page 40.
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 the Mounting
Hardware" on page 49.
The chassis height of 14.0 in. (35.6 cm) is approximately 8 U. A
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 SRX 5600 services gateways 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 device,
up to 163.5 lb (74.2 kg). If you stack five fully configured devices in one rack, it must
be capable of supporting up to 818 lb (371.0 kg).
Install the device as close as possible to the front of the cabinet so that the cable
management system just clears the inside of the front door. This maximizes the
clearance in the rear of the cabinet for critical airflow.
Route and dress all cables to minimize the blockage of airflow to and from the
chassis.
Rack Size and Strength on page 39
Spacing of Mounting Bracket Holes on page 40
Connection to Building Structure on page 40
Chapter 3: Preparing the Site for Services Gateway Installation
).
http://www.eia.org
).
http://www.etsi.org
U is the standard
39
Rack Requirements