PWR-2700-DC-R datasheet(37/80 Pages) ARISTA

37 / 80 page

Cabling the Modular Switch

Table 8: Power Supply Configurations

Modular

Switch

Recommended

Number of

PSUs (for

redundancy)

Number

of PSUs

Shipped in

Bundle

Minimum

Number

of PSUs

Required

(per power

domain)

Maximum

Number

of PSUs

Supported

Number

of Power

Domains

DCS-7504N

DCS-7508N

DCS-7512N

DCS-7516N

4.7.1

Recommendations for Power Supply Usage

•

Use a separate circuit with required protection for each power supply.

•

Use the same PSU model when replacing a failed PSU. Check for a suitable alternative if the model

is no longer supported or available.

•

Unless your switch allows for mixing power supplies, do not mix power supply types.

•

You must populate each power domain with the minimum number of PSUs required. Domains are

separate banks of grouped supplies, Ten high and ten low for the 16 slot chassis (Domain 1: PS1 –

PS10; domain 2: PS11 – PS20).

•

Chassis with multiple power domains should have an equal number of supplies in each domain.

•

For supervisor cooling purposes, all systems require the minimum number of PSUs, as specified in

the Power Supply Configurations , in the top section behind the supervisors.

•

For 8-slot and 12-slot chassis (grouped power supplies top and bottom), Arista recommends an

equal number of power supplies in the top and bottom groups.

•

For the 16-slot chassis with two power domains, the power domain with the lowest number of power

supplies prescribes the total power available, therefore, Arista recommends equal number of PSUs

in each domain.

•

Valid redundancy configurations for each domain are described in Power Supply Redundancy

section.

4.8

Power Supply Redundancy

Important: Installation of this equipment must comply with local and national electrical codes.

If necessary, consult with the appropriate regulatory agencies and inspection authorities to

ensure compliance.

Installation de cet équipement doit être conformes aux codes électriques locaux et nationaux.

Si nécessaire, consulter les organismes de réglementation appropriés et des autorités de

contrôle pour assurer la conformité.

Important: Read all installation instructions before connecting the system to the power source.

Lire toutes les instructions d'installation avant de brancher le système à la source

d'alimentation.

Most installations will have redundant, dual, independent power feeds.

For the following examples, each power feed originates from a different power provider. Each

independent power feed will be referenced as label A and B.

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