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Silver 1U rack switch, 48 SFP28 ports, 6 QSFP28 uplinks, dual 747W PSUs, rear-to-front airflow

Arista Networks, Inc.

Arista Networks DCS-7280SR2A-48YC6-R network switch 48×25G SFP28 6×100G QSFP28

SKU CH-EEEY-ME2YJ MPN DCS-7280SR2A-48YC6-R

48-port 25GbE SFP28 switch with six 100GbE QSFP28 uplinks, rear-to-front airflow and dual 747W power supplies

  • 48 ports of 25 GbE density for high-throughput server connectivity
  • 6 uplinks at 100 GbE QSFP28 for scalable spine links
  • 1 RU form factor saves rack space in dense deployments
  • Dual 747 W hot-swap power supplies with rear-to-front airflow for resilient cooling
  • AlgoMatch engine enables flexible ACL and telemetry processing

48-port 25GbE switch with 6×100GbE uplinks

The Arista DCS-7280SR2A-48YC6-R is a 1 RU network switch built for high-density leaf and spine deployments. It provides 48 ports of 25GbE SFP28 connectivity and six 100GbE QSFP28 uplinks. The chassis includes two 747 W hot-swappable AC power supplies and four hot-swappable fans, all configured for rear-to-front airflow. Arista EOS runs on the platform and supports the AlgoMatch feature for flexible packet matching.

Suited for 25G server pods needing dense 100G

Network teams running 25GbE to servers and 100GbE between racks will match the port ratio exactly. The rear-to-front airflow design fits standard hot-aisle or cold-aisle layouts with the supplied fans and power supplies. Buyers who need front-to-rear cooling should look at a different airflow variant. Operators requiring built-in rack rails must source them separately because none are included with the switch.

Rear-to-front airflow with dual 747 W supplies

The cooling direction and power subsystem are fixed at the factory and cannot be changed after purchase. Confirm that your rack airflow plan and power distribution match rear-to-front intake before ordering. The two included 747 W units provide redundancy, but the total available budget depends on your facility voltage and circuit design.

Highlights

  • 48 ports of 25 GbE density for high-throughput server connectivity
  • 6 uplinks at 100 GbE QSFP28 for scalable spine links
  • 1 RU form factor saves rack space in dense deployments
  • Dual 747 W hot-swap power supplies with rear-to-front airflow for resilient cooling
  • AlgoMatch engine enables flexible ACL and telemetry processing

Specifications

BrandArista
ModelDCS-7280SR2A-48YC6-R

Questions about this item

What rack space does the 1 RU switch require and are the mounting brackets included?

The unit occupies 1 RU of rack height; rack mounts are not included and must be sourced separately.

How are the two 747 W AC power supplies and four fans installed, and what common error should be avoided?

Both power supplies and all four fans are hot-swappable modules that slide into the rear; the common error is inserting only one power supply and leaving the second bay empty, which removes redundancy.

When will the hot-swappable fans or power supplies need replacement in the rear-to-front airflow system?

The four fans and two 747 W power supplies are field-replaceable; replace a fan when its status LED shows a fault or airflow drops, and replace a power supply if it reports a failure or you lose redundancy.

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