Arista DCS-7050SX2-72Q — 48x SFP+ 10GbE + 6x QSFP+ 40GbE 1U Data Center Switch
Technical Identity
The Arista DCS-7050SX2-72Q (7050SX2-72Q) is a 1U data-center Ethernet switch from the Arista 7050X2 series with 48x SFP+ 10GbE ports and 6x QSFP+ 40GbE ports, 1.44 Tbps of switching capacity and cut-through latency of approximately 550 ns. Stock labels for this listing include "DCS7050SX2-72" and "DCS-7050SX2-72Q". Condition: Refurbished.
Specifications
Brand: Arista Networks
Model / MPN: DCS-7050SX2-72Q
Product type: Data-center Ethernet switch (fixed configuration)
Product family: Arista 7050X2 Series
Ports: 48x SFP+ 10GbE + 6x QSFP+ 40GbE
Breakout: each QSFP+ port configurable as 4x10GbE (up to 72 logical 10GbE ports)
Switching capacity: 1.44 Tbps
Forwarding rate: ~1,080 Mpps
Latency: ~550 ns cut-through
Form factor: 1U rack-mount
Power: typically under 2 W per 10GbE port (datasheet)
Airflow / PSU: -F (front-to-rear) or -R (rear-to-front) variant per unit label — verify before order
Operating system: Arista EOS (supported through the EOS 4.28 release train)
Condition: Refurbished
Engineering Context
The 7050SX2-72Q is a classic 10GbE leaf/top-of-rack design: 48 SFP+ server-facing ports with 6 QSFP+ 40GbE uplinks toward the spine, at wire speed for L2 and L3. Arista EOS supplies the platform's automation, telemetry and Linux-based operational tooling as documented in the 7050X2 materials. The X2 generation succeeded the original 7050SX-72Q with an updated switch silicon and larger tables.
Use Cases
10GbE server access / leaf switching with 40GbE spine uplinks
Up to 72 logical 10GbE ports via QSFP+ breakout for dense 10G aggregation
Lab, staging and test fabrics on EOS 4.28-and-earlier trains
Spare or expansion unit for existing 7050X2 estates
What This Is NOT
NOT the original DCS-7050SX-72Q. The SX2 is the later 7050X2-generation platform; support timelines differ.
NOT a 25GbE or 100GbE switch. SFP28 and QSFP28 operation are not supported; ports are 10GbE SFP+ and 40GbE QSFP+.
NOT an InfiniBand switch. Ethernet only.
NOT supported by current EOS trains. EOS 4.29 and later do not support this platform (last supported train: EOS 4.28).
NOT supplied with transceivers, cables, rail kits or other accessories unless explicitly stated.
NOT sold with any EOS software license or support entitlement. Software and support arrangements are between the buyer and Arista.
Compatibility & Hard Constraints
Optics/cabling: SFP+ 10GbE optics/DAC/AOC in the 48 access ports; QSFP+ 40GbE optics/DAC/AOC (or 4x10GbE breakout) in the 6 uplink ports.
Typical peer platforms: 10GbE server NICs at the access layer; 40GbE spine switches upstream.
Airflow: the -F / -R airflow variant must match your hot-aisle/cold-aisle design — confirm the variant on the unit label before ordering.
Software: supported up to the EOS 4.28 train; EOS image access requires an Arista account/entitlement.
Pre-deployment verification: confirm the exact model string, airflow direction, PSU type and EOS image availability against the unit label and Arista documentation.
Frequently Asked Questions (FAQ)
Q. What is the Arista DCS-7050SX2-72Q?
The DCS-7050SX2-72Q is a 1U Arista 7050X2-series data-center Ethernet switch with 48x SFP+ 10GbE ports and 6x QSFP+ 40GbE ports, 1.44 Tbps of switching capacity and cut-through latency of approximately 550 ns, running Arista EOS.
Q. Is a unit labeled DCS7050SX2-72 the same as the DCS-7050SX2-72Q?
Units in this listing carry label spellings including "DCS7050SX2-72" and "DCS-7050SX2-72Q"; the canonical Arista part number published here is DCS-7050SX2-72Q (48x SFP+ + 6x QSFP+). Confirm the full model string on the unit label before order if the exact sub-model matters for your deployment.
Q. Can the QSFP+ ports of the DCS-7050SX2-72Q break out to 10GbE?
Yes. Each of the 6 QSFP+ 40GbE ports can be configured as four independent 10GbE ports, giving up to 72 logical 10GbE ports (48 SFP+ + 24 breakout).
Q. Does the DCS-7050SX2-72Q support 25GbE or 100GbE?
No. Ports are SFP+ 10GbE and QSFP+ 40GbE; SFP28 25GbE and QSFP28 100GbE operation are not supported.
Q. Which Arista EOS versions support the DCS-7050SX2-72Q?
Per Arista's end-of-support notice for the 7050X/X2 series, EOS releases up to and including the 4.28 train support this platform; EOS 4.29 and later do not. Arista's extended bug-fix window for the 4.28 train ended March 20, 2025. EOS software access requires an arrangement with Arista - no software entitlement is included with this hardware.
Q. What condition is the DCS-7050SX2-72Q supplied in by T.E.S IT-SOLUTIONS?
Refurbished. Each unit is tested, inspected and professionally packed, shipping from EU stock with global B2B delivery. Airflow variant (-F front-to-rear or -R rear-to-front) and PSU configuration are per unit label - confirm before order.
Why T.E.S IT-SOLUTIONS
Every DCS-7050SX2-72Q unit ships with: (1) power-on and functional testing, (2) configuration reset and inspection, (3) full cosmetic inspection, (4) professional packaging for freight, (5) global B2B shipping from EU stock, (6) technical consultation for data-center network design at no extra cost.
Condition: Refurbished. Tested working. Airflow/PSU variant per unit label. EU stock, global B2B shipping. See tes-itsolutions.com.