Equipment Rack Requirements

When allocating equipment rack space, consider the following:

• Type of equipment racks recommended for the system
• Number of equipment racks required to hold your current system configuration
• Future expansion

Make sure that your distribution rack meets basic mechanical and space requirements and complies with conventional standards. In the United States, use the EIA-310-D Cabinets, Racks, Panels, and Associated Equipment, September 1992 standard.

Mechanical Requirements

Follow these mechanical requirements for your rack:

• Select from the following rack options:
  • Two-post rack—A freestanding enclosed cabinet with two mounting posts in the front
  • Telco-type rack—Two adjacent mounting posts that you must secure to the floor or an overhead structure
  • Four-post rack—A freestanding open rack, either open or closed
• The rack must have at least two mounting posts.
• The distance between the mounting holes in the two posts must be 18.31 inches ±.063 inch, as specified in EIA-310-D.
• An optional mounting kit is available for midchassis mounting. Contact your Juniper Networks sales representative for more information.

Space Requirements

If you use an enclosed rack for the system, ensure that there is a minimum of 3 inches of clearance between the inner side wall and the system. This clearance space ensures adequate air flow.

Proper Rack Installation

To confirm proper equipment rack installation, verify the following:

• Racks are installed and electrically grounded according to manufacturer instructions.
• Equipment racks are anchored to the floor and, when possible, anchored to the ceiling as well.
• Equipment rack installations comply with applicable local, state, and national codes.