Arista DCS-7050Q-16 — 16x QSFP+ 40GbE + 8x SFP+ 10GbE 1U Data Center Switch
Technical Identity
The Arista DCS-7050Q-16 (7050Q-16) is a 1U data-center Ethernet switch from the original Arista 7050 series with 16x QSFP+ 40GbE ports and 8x SFP+ 10GbE ports, 1.28 Tbps of switching capacity and cut-through latency of approximately 800 ns per the Arista 7050Q datasheet. Stock labels for this listing include "DCS7050Q-16" and "DCS-7050Q-16" — the same Arista model. Condition: Refurbished.
Specifications
Brand: Arista Networks
Model / MPN: DCS-7050Q-16
Product type: Data-center Ethernet switch (fixed configuration)
Product family: Arista 7050 Series
Ports: 16x QSFP+ 40GbE + 8x SFP+ 10GbE
Switching capacity: 1.28 Tbps
Forwarding rate: 960 Mpps
Latency: ~800 ns cut-through
Packet buffer: 9 MB shared, dynamically allocated
MAC table: up to 32,000 entries
Form factor: 1U rack-mount
Airflow / PSU: -F or -R airflow, AC or DC PSU variants exist — per unit label, verify before order
Operating system: Arista EOS (legacy trains only; platform past software support)
Condition: Refurbished
Engineering Context
The 7050Q-16 was Arista's first-generation dense 40GbE fixed switch, combining 16 QSFP+ ports for spine/uplink connectivity with 8 native SFP+ ports for 10GbE devices. It provides wire-speed L2/L3 forwarding with a 9 MB shared packet buffer allocated dynamically to congested ports, and runs Arista EOS with its standard Linux-based operational tooling as documented in the 7050 datasheet.
Use Cases
Legacy 40GbE aggregation and 10GbE access in existing 7050 estates
Lab, staging and test fabrics where current EOS support is not required
Cost-effective spare unit for deployed DCS-7050Q-16 infrastructure
Mixed 10/40GbE environments needing native SFP+ ports without breakout
What This Is NOT
NOT a 7050X-series switch. This is the original 7050 series; the 7050QX-32 / 7050QX-32S are later platforms with different capacity and support timelines.
NOT a 100GbE switch. QSFP+ 40GbE and SFP+ 10GbE only; QSFP28 is not supported.
NOT an InfiniBand switch. Ethernet only.
NOT supported by current EOS trains. The platform is past Arista software support; verify the final supported release against Arista's notices.
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: QSFP+ 40GbE transceivers, DAC and AOC; SFP+ 10GbE (and GbE SFP where supported) in the 8 SFP+ ports.
Typical peer platforms: 10/40GbE data-center fabrics of the same generation.
Airflow / power: both airflow directions and AC/DC PSU variants exist for this model — confirm the exact variant on the unit label before ordering.
Software: legacy EOS trains only; EOS image access requires an Arista account/entitlement.
Pre-deployment verification: confirm airflow, PSU type, breakout behavior and EOS image availability against the unit label and Arista documentation.
Frequently Asked Questions (FAQ)
Q. What is the Arista DCS-7050Q-16?
The DCS-7050Q-16 is a 1U Arista 7050-series data-center Ethernet switch with 16x QSFP+ 40GbE ports and 8x SFP+ 10GbE ports, 1.28 Tbps of switching capacity, a forwarding rate of 960 Mpps, cut-through latency of approximately 800 ns and a 9 MB dynamically shared packet buffer, running Arista EOS.
Q. Is DCS7050Q-16 the same as DCS-7050Q-16?
Yes. DCS7050Q-16 is a label spelling of the same model; the canonical Arista part number is DCS-7050Q-16.
Q. How does the DCS-7050Q-16 differ from the DCS-7050QX-32?
The 7050Q-16 is the earlier, original 7050-series platform with 16 QSFP+ ports plus 8 SFP+ ports and 1.28 Tbps capacity; the 7050QX-32 is a later 7050X-series platform with 32 QSFP+ ports and 2.56 Tbps.
Q. Does the DCS-7050Q-16 support 100GbE?
No. Ports are QSFP+ 40GbE and SFP+ 10GbE; QSFP28 100GbE operation is not supported.
Q. Which Arista EOS versions support the DCS-7050Q-16?
The original 7050 series is long past end of sale and no longer receives EOS software support. The final supported EOS release for this platform should be verified against Arista's end-of-support notices before deployment. EOS software access requires an arrangement with Arista - no software entitlement is included with this hardware.
Q. What condition is the DCS-7050Q-16 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 or -R) and PSU type (AC or DC) are per unit label - confirm before order.
Why T.E.S IT-SOLUTIONS
Every DCS-7050Q-16 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.