Chapter: 2 Preparation; Site Selection - Arista 7000 Series Quick Start Manual

Preparation
2.1

Site Selection

The following criteria should be considered when selecting a site to install the switch:
• Temperature and Ventilation: For proper ventilation, install the switch where there is ample
airflow to the front and back of the switch. The ambient temperature should not go below 0° or
exceed 40° C.
Important! To prevent the switch from overheating, do not operate it in an area where the ambient temperature
exceeds 40°C (104°F).
• Airflow Orientation: Determine the airflow direction of the four fan modules and two power supply
modules on the rear panel.
on the power supply modules. The fan module airflow direction label is located on the left side of
the handle. The fan and power supply module handles also indicate the module airflow direction:
• Blue Handle: Air Inlet module.
• Red Handle: Air Exit module.
Verify that each module has the same airflow direction. Base the switch orientation on the airflow
direction of the modules to assure the air inlet is always oriented toward the cool aisle:
• Air Exit modules: orient the rear panel toward the hot aisle.
• Air Inlet modules: orient the rear panel toward the cool aisle.
If the airflow direction is not compatible with the installation site, contact your sales representative
to obtain modules that circulate air in the opposite direction.
• Rack Space: Install the switch in a 19" rack or cabinet. The switch height is 1 RU. The accessory
kit provides mounting brackets for two-post and four-post racks.
When mounting the switch in a partially filled rack, load the rack from bottom to top, with the
heaviest equipment at the bottom. Load the switch at the bottom if it is the only item in the rack.
• Power Requirements: The switch requires one of these circuits:
• 100-240 VAC, 5.29-2.2 A, 50-60 Hz A.
• 40-72 VDC, 13.9–7.72 A.
Two circuits provide redundancy protection.
Quick Start Guide: 7000 Series 1 RU-Gen 2 Data Center Switches
Figure 2-1 on page 6 indicates the location of the airflow direction label
Section 4.1
Chapter 2
describes power cable requirements.
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