Dell PowerConnect J-EX4200, Руководство по оборудованию

Страница: 79 / 238

CHAPTER 5
Mounting and Clearance Requirements
• Rack Requirements for J-EX4200 Switches on page 63
• Cabinet Requirements for J-EX4200 Switches on page 64
•
Requirements for Mounting a J-EX4200 Switch on a Desktop or Wall on page 66
•
Clearance Requirements for Airflow and Hardware Maintenance for J-EX4200
Switches on page 66
Rack Requirements for J-EX4200 Switches
You can mount the switch on two-post racks or four-post racks.
Rack requirements consist of:
•
Rack type
•
Mounting bracket hole spacing
• Rack size and strength
• Rack connection to the building structure
Table 26 on page 63 provides the rack requirements and specifications for the switch.
Table 26: Rack Requirements and Specifications for the Switch
Guidelines Rack Requirement
Use a two-post rack or a four-post rack. You can mount the switch on any two-post or four-post rack
that provides bracket holes or hole patterns spaced at 1 U (1.75 in./4.45 cm) increments and that
meets the size and strength requirements to support the weight.
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 ( http://www.eia.org ).
The rack must meet the strength requirements to support the weight of the chassis.
Rack type
The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be
mounted in any rack that provides holes spaced at that distance. Mounting bracket hole
spacing
63