Juniper Networks M10i manual Rack Requirements, Rack Size and Strength

M10i Internet Router Hardware Guide

Table 14: Site Preparation Checklist (continued)

Item or Task	For More Information	Performed By	Date
Plan rack location, including required space	“Clearance Requirements for Airflow
clearances.	and Hardware
	Maintenance” on page 44
	“Rack Size and Strength” on page 42
If a rack is used, secure rack to floor and	“Connection to Building
building structure.	Structure” on page 44
Cables

Acquire cables and connectors:

■Determine the number of cables needed based on your planned configuration.

■Review the maximum distance allowed for each cable. Choose the length of cable based on the distance between the hardware components being connected.

“Calculating Power Budget for Fiber-Optic Cable” on page 185

“Calculating Power Margin for Fiber-Optic Cable” on page 185

Plan the cable routing and management.	“Maintaining PICs and PIC
	Cables” on page 74

Rack Requirements

The router must be installed in a rack. Many types of racks are acceptable, including 4-post (telco) racks and open–frame racks. An example of a open-frame rack appears in Figure 15.

The following sections describe rack requirements:

■Rack Size and Strength on page 42

■Spacing of Mounting Holes on page 44

■Connection to Building Structure on page 44

Rack Size and Strength

The router 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 (http://www.eia.org).

With the use of adapters, the router is designed to fit into a 600-mm-wide and

600-mm-deep 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). Use approved wing devices to narrow the opening between the rails.

42■ Rack Requirements