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Silver 1 RU network switch front panel with 36 QSFP+ and 12 QSFP28 ports

Arista Networks, Inc.

Arista Networks DCS-7280QRA-C36SM-F network switch 36 x 40GbE QSFP+ 12 x 100GbE QSFP28

SKU CH-TY3F-CDAG4 MPN DCS-7280QRA-C36SM-F

A 1 RU switch providing 36 ports of 40GbE QSFP+ and 12 ports of 100GbE QSFP28 with dual 750W hot-swap power supplies and front-to-rear airflow

  • 36 ports of 40 GbE QSFP+ for high-density aggregation
  • 12 ports of 100 GbE QSFP28 uplinks for scalable backbone connectivity
  • 1 RU form factor saves valuable rack space
  • Dual 750 W hot-swap AC supplies keep the switch running during maintenance
  • Four hot-swap fans with front-to-rear airflow maintain stable temperatures

Product Identity

The Arista DCS-7280QRA-C36SM-F is a 1 RU network switch delivering 36 ports of 40 GbE QSFP+ and 12 ports of 100 GbE QSFP28. It runs Arista EOS and includes two 750 W hot-swap AC power supplies plus four hot-swap fans with front-to-rear airflow.

Target Audience

Data-centre operators who need high-density 40 GbE and 100 GbE connectivity in a single rack unit will find the port mix and expanded memory useful. Buyers requiring Power over Ethernet, 10 GbE RJ-45 downlinks or bundled rack mounts should evaluate other platforms.

Deciding Specification

The switch provides 36 QSFP+ ports at 40 GbE and 12 QSFP28 ports at 100 GbE, a fixed configuration that determines whether the density and speed profile matches the network design.

Highlights

  • 36 ports of 40 GbE QSFP+ for high-density aggregation
  • 12 ports of 100 GbE QSFP28 uplinks for scalable backbone connectivity
  • 1 RU form factor saves valuable rack space
  • Dual 750 W hot-swap AC supplies keep the switch running during maintenance
  • Four hot-swap fans with front-to-rear airflow maintain stable temperatures

Specifications

BrandArista
ModelDCS-7280QRA-C36SM-F

Questions about this item

How often will the four hot-swappable fans or the two 750W power supplies need replacement in this 1 RU switch?

Both the four fans and the two 750W AC power supplies are hot-swappable, so either can be replaced individually without powering down the DCS-7280QRA-C36SM-F.

Which resource hits its ceiling first when all 36 QSFP+ and 12 QSFP28 ports run at line rate?

The forwarding plane is built for full 40 GbE and 100 GbE line-rate across every port, so the first practical limit is the 750W power budget of each supply rather than switching capacity.

What is the typical heat output and acoustic level when the front-to-rear airflow runs continuously?

Dual 750W supplies and four front-to-rear fans move enough air to keep the 1 RU chassis within thermal limits, and fan speed scales with temperature to balance cooling and noise.

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