Arista 7500N Series, Быстрый старт

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8 Quick Start Guide: 7500N Series Modular Switches
Tools and Parts Required for Installation Chapter 2: Preparation
•
Temperature and Ventilation:
For proper ventilation, install the switch where there is ample
airflow to the front and back of the switch. The 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).
Pour empêcher l'interrupteur de surchauffe, ne pas utiliser il dans une zone où la température ambiante
est supérieure à 40°C (104°F).
• Airflow Orientation: The fans direct air from the front panel to the rear panel. Orient the front panel
toward the cool aisle.
•
Rack Space Requirements:
Table 2-2 shows the rack space requirements for each of the modular
switches.
Note
The accessory kit provides the required mounting brackets or shelf for each switch.
•
Power Requirements:
Arista switches require a minimum number of operating power supplies in
the top section of all chassis, AC or DC and for each power domain of switches with multiple power
domains. Refer to
Power Supply Specifications for more details regarding your switch.
Important!
DC cables should be protected with circuit over-current protection devices and circuit disconnect
means. To power off a unit, power must be disconnected from ALL power cables.
DC câbles doivent être protégés avec dispositifs de protection de surintensité circuit et moyens de
déconnexion du circuit. Pour alimenter un appareil hors tension, l'alimentation doit être débranchée de
tous les câbles d'alimentation.
•
Other Requirements:
Select a site where liquids or objects cannot fall onto the equipment and
foreign objects are not drawn into the ventilation holes. Verify these guidelines are met:
• Clearance areas to the front and rear panels allow for unrestricted cabling.
• All front and rear panel indicators can be easily read.
• AC power cords can reach from the AC power outlet to the input connectors.
• DC power cables can reach from the DC power distribution unit to the input connectors.
2.2 Tools and Parts Required for Installation
The following tools are required to install a modular switch:
• Mechanical device capable of lifting chassis being installed ( Table 1-1 on page 3 ).
Table 2-2 Rack space requirements
Switch
Rack or cabinet (standard 19" EIA)
2-post 4-post
Switch Height
(RU)
DCS-7504N Yes Yes 7
DCS-7508N Yes Yes 13
DCS-7512N No Yes 18
DCS-7516N No Yes 29