This guide is intended for properly trained service personnel and technicians who need to install the following Arista Networks Data Center Switches:

• DCS-7804
• DCS-7808
• DCS-7812
• DCS-7816

Upon receiving the switch, inspect the shipping boxes and record any external damage. Retain packing materials if you suspect that part of the shipment is damaged; the carrier may need to inspect them.

If the boxes were not damaged in transit, unpack them carefully. Ensure that you do not discard any accessories that may be packaged in the same box as the main unit.

Inspect the packing list and confirm that you received all listed items. Compare the packing list with your DCS-7800 Series Modular Switches purchase order. Parts List provides a list of components included with the switch.

Refer to the Arista Networks document Safety Information and Translated Safety Warnings available at https://www.arista.com/en/support/product-documentation.

Any customer, partner, reseller or distributor holding a valid Arista Service Contract can obtain technical support in any of the following ways:

• Email:This email address is being protected from spambots. You need JavaScript enabled to view it.. This is the easiest way to create a new service request.

  Include a detailed description of the problem and the output of “show tech-support”.

• Web:https://www.arista.com/en/support.

  A support case may be created through the support portal on our website. You may also download the most current software and documentation, as well as view FAQs, Knowledge Base articles, Security Advisories, and Field Notices.

• Phone: +1 866-476-0000 or +1 408-547-5502.

The Table 1 lists the specifications of Arista Data Center modular switches covered by this guide.

_{1. For non-redundant power feeds, 12 to 16 for redundant power feeds.}

_{2. For non-redundant power feeds, 16 to 24 for redundant power feeds.}

_{3. For non-redundant power feeds, TBD for redundant power feeds.}

_{4. For non-redundant power feeds, 24 to 48 for redundant power feeds.}

The Table 2 lists power specifications of modular switch components.

_{¹ With no input power.}

_{^{Note 1} Includes typical power supply conversion inefficiency. Contact your local Sales Engineer for 7800 power calculator details.}

_{^{Note 2} Power numbers given as Typical/Maximum or Typical/Hot/Maximum where Hot is defined as 40°C Sea Level.}

_{^* Not N+N redundant power at worst case Temp/Elevation.}