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by Arista
Product Line: Arista Networks DCS-7000 Series Switches
Product Type: Switch
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Original price $0.00 - Original price $0.00
Original price
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Current price $0.00
Title: Surplus

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Product Description

The DCS-7120T-4S-R Arista features 20-port 1/10GBASE-T (RJ-45) and 4 SFP+ ports, supporting 10GBASE-T over Category 6a or 7 cabling up to 100m, and over Category 5e or 6 up to 55m. It is engineered for high performance with a throughput of 480 Gbps and packets per second rate of 360 Mpps, while maintaining a low latency of 2.5 usec. The unit includes 5 rear-to-front airflow fans, 2 760W AC power supplies with 1+1 PSU redundancy, and is designed for efficient operation with a typical power draw of 288 watts.

Key Feature for the DCS-7120T-4S-R

  • What is the throughput capacity of this networking device?
    The throughput capacity is 480 Gbps.
  • How many 10GBASE-T ports does the device offer?
    The device offers 20 10GBASE-T (RJ-45) ports.
  • What type of CPU is integrated within the device?
    It integrates an X86 Dual-Core CPU.
  • Can you describe the power supply redundancy feature?
    Yes, it features 1+1 PSU redundancy, ensuring continuous operation in case one power supply fails.
  • What is the maximum operational temperature for this device?
    The maximum operational temperature is 40C.
  • How many SFP+ ports are available?
    There are 4 SFP+ ports available.
  • What are the storage temperature limits?
    The storage temperature ranges from -40 to 70C.
  • Is the device equipped with hot swappable PSUs?
    Yes, the PSUs are hot swappable, allowing for maintenance or replacement without powering down.
  • What is the latency of this networking hardware?
    The latency is 2.5 microseconds.
  • How is airflow managed within the device?
    Airflow is managed with 5 rear-to-front airflow fans, ensuring optimal cooling.

Product Review

The Arista DCS-7120T-4S-R offers a balanced mix of 20 1/10GBASE-T ports and 4 SFP+ ports, catering to diverse connectivity needs with a throughput of 480 Gbps and a low latency of 2.5 µsec, which is ideal for high-performance computing environments. However, its reliance on Category 6a or 7 cabling for maximum 10GBASE-T distance might limit deployment flexibility in infrastructures with pre-existing lower category cabling. The inclusion of features like 1+1 PSU redundancy, hot-swappable PSUs, and efficient rear-to-front airflow cooling ensures system reliability and easier maintenance in data center environments.


The Arista DCS-7120T-4S-R is a high-performance network switch designed for data centers requiring efficient, scalable, and flexible networking solutions. This device offers a combination of 20 1/10GBASE-T ports and 4 SFP+ ports, providing versatile connectivity options for a wide range of network architectures. With rear-to-front airflow design supported by five fans, it ensures optimal cooling for reliable operation in various environments. Highlighting its hardware specifications, the switch boasts a throughput capacity of 480 Gbps and can handle 360 million packets per second (Mpps), which showcases its ability to manage high volumes of data traffic with minimal latency, recorded at 2.5 microseconds. At its core, the device is powered by an X86 Dual-Core CPU, paired with 2GB of flash memory and 2GB of main memory, facilitating smooth and efficient processing of network tasks. For management and connectivity, the Arista DCS-7120T-4S-R is equipped with two Ethernet management ports, a serial port, and a USB port, enhancing its accessibility and ease of management. It supports 10GBASE-T connections over Category 6a or 7 cabling up to 100 meters and can also operate over Category 5e or 6 cabling up to 55 meters, offering flexibility in network design and infrastructure. The unit is designed with efficiency in mind, featuring a typical power draw of 288 watts. It includes dual 760W AC power supplies, providing 1+1 PSU redundancy and hot-swappable capabilities, ensuring uninterrupted operation and easy maintenance without the need for system downtime. -
  • Throughput 480 Gbps and 360 Mpps for high-capacity data handling.
  • -
  • Flexible connectivity with 20 1/10GBASE-T ports and 4 SFP+ ports.
  • -
  • Efficient operation with a typical power draw of 288 watts.
  • Physically, the switch measures 1.74 x 17.4 x 20.25 inches (44 x 440 x 515mm) and weighs 26 lbs (11.8kg), making it a compact yet powerful solution for rack-mounted installations. It operates within a temperature range of 0 to 40C and can be stored in temperatures ranging from -40 to 70C. The device is built to withstand relative humidity levels of 5 to 95%, ensuring durability and reliability in diverse conditions. In conclusion, the Arista DCS-7120T-4S-R is a versatile and high-performing network switch that meets the demands of modern data centers, offering a blend of speed, flexibility, and reliability. Its comprehensive set of features and specifications make it an ideal choice for organizations looking to optimize their network infrastructure for better performance and scalability.


    Item Number and Maker Arista DCS-7120T-4S-R
    1/10GBASE-T Ports (RJ-45) 20
    SFP+ Interfaces 4
    Cooling Fans Direction 5, rear-to-front
    Power Supplies 2, 760W AC
    Network Throughput 480 Gbps
    Rate of Packets 360 Mpps
    Signal Delay 2.5 microseconds
    Processor Dual-Core X86
    Non-volatile Storage 2GB
    System Memory 2GB
    Management Ethernet Ports 2
    Console Port 1
    USB Interface 1
    10GBASE-T Compatibility with Cat 6a/7 Up to 100 meters
    10GBASE-T Compatibility with Cat 5e/6 Up to 55 meters
    Energy Consumption Average 288 watts
    Power Supply Redundancy Available
    Power Units Replaceable During Operation Available
    Dimensions (Height x Width x Depth) 1.74 x 17.4 x 20.25 inches (44 x 440 x 515mm)
    Mass 26 pounds (11.8kg)
    Operational Temperature Range 0 to 40°C
    Storage Temperature Range -40 to 70°C
    Humidity Tolerance 5 to 95%

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