• Silver-colored rack-mounted arista dcs-7804r4-bnda-u-dc network switches with port grid and ventilation slots
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Arista

Arista DCS-7804R4-BNDA-U-DC | 7800R4 AI Spine 4-Slot Modular Chassis Bundle, DC

Arista DCS-7804R4-BNDA-U-DC | 7800R4 AI Spine 4-Slot Modular Chassis Bundle, DC

DCS-7804R4-BNDA-U-DC

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Description

The Arista 7800R4 Series 4-slot modular AI spine switch chassis bundle is purpose-built for large-scale AI/ML training clusters, HPC interconnects, and high-performance data centre spine deployments. This DC-powered bundle ships complete with the DCS-7804 chassis, six 3kW D2 DC power supplies, five FM-R4 fabric modules, one fabric cooling module, and one 7800-Sup1A supervisor — delivering up to 460 Tbps system fabric capacity (920 Tbps full-duplex) with per-slot throughput of 28.8 Tbps and support for up to 576 wire-speed 800G ports across the system.

Running Arista EOS, the 7804R4 provides a fully scheduled, 100% lossless cell-based fabric with per-port Virtual Output Queuing (VoQ), sub-4-microsecond latency, and deep 32 GB per-slot packet buffering — essential for eliminating congestion in GPU-to-GPU workloads. Ultra Ethernet readiness, MACsec/IPsec/VXLANsec encryption, EVPN, MPLS, Streaming Telemetry, and AI Analyzer are all native to EOS. Hot-swappable redundant components and 1+1 grid DC power redundancy ensure continuous uptime. Available now at iptrading.com.au — competitive prices and local support.

Features

- Optimised for AI/ML and HPC cluster interconnects as a single-tier or spine in two-tier data centre architectures
- Fully scheduled, 100% lossless cell-based fabric with distributed hardware scheduler
- Per-port Virtual Output Queuing (VoQ) eliminates head-of-line blocking at scale
- Ultra Ethernet ready with Arista Etherlink® RDMA optimisations — DCQCN, PFC, and ECN
- Sub-4-microsecond latency on 64-byte frames for latency-sensitive GPU workloads
- Deep 32 GB per-slot packet buffering absorbs AI traffic bursts without drops
- Hot-swappable, redundant power supplies and fabric modules for continuous availability
- 1+1 grid redundancy per dual-input DC power supply
- Hardware accelerated link health management
- MACsec, IPsec, and VXLANsec encryption support with R4K line cards
- FlexRouteâ„¢ supports Internet-scale routing tables with 5M+ routes (R4K line cards)
- Algorithmic ACLs and Inband Network Telemetry (INT)
- Streaming Telemetry, LANZ, AI Analyzer, and DANZ natively integrated in Arista EOS
- Comprehensive QoS: traffic classification, VoQ, Hierarchical-QoS, and shaping
- Full L2/L3 feature set: EVPN, MPLS, SR, LDP, RSVP, GRE tunnelling
- ECMP/UCMP, TI-LFA, and RSVP-TE FRR for network resiliency
- Backward compatible — existing 7800R3 systems upgradeable to R4 specification

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Chassis: DCS-7804-CH — 4 line card slots, 2 supervisor slots, 6 fabric module slots
- Power Supplies: 6 x 3kW D2 DC (HVDC/LVDC dual-input, internally redundant, 1+1 grid redundancy)
- DC Input Range: -40V to -72V or 240V to 380V direct current
- Power Supply Efficiency: Over 94%
- Fabric Modules: 5 x FM-R4 (fabric slots 1–5)
- Fabric Cooling Module: 1 x FCM (fabric slot 6)
- Supervisor: 1 x 7800-Sup1A
- System Fabric Capacity: Up to 460 Tbps (920 Tbps full-duplex)
- Per Slot Throughput: Up to 28.8 Tbps
- System Packet Forwarding Rate: Up to 173 Billion packets per second
- Supported Port Speeds: 100G, 200G, 400G, 800G
- Maximum 800G Ports (system-wide): Up to 576 wire-speed
- Packet Buffer Depth: Up to 32 GB per line card
- Latency: Under 4 microseconds (64-byte frames)
- Airflow: Front-to-rear
- Includes: Extended Rack Kit
- Operating System: Arista EOS

FAQs

Q: What is included in the DCS-7804R4-BNDA-U-DC chassis bundle?
A: The bundle includes the DCS-7804 chassis (4 line card slots), six 3kW D2 DC power supplies, five FM-R4 fabric modules, one fabric cooling module (FCM), one 7800-Sup1A supervisor, and an extended rack kit — everything required to bring up the chassis before installing line cards.

Q: What AI and HPC workloads is the 7804R4 designed for?
A: The 7804R4 is purpose-built for GPU cluster interconnects, AI/ML training fabrics, and HPC environments. Its 100% lossless cell-based fabric, per-port VoQ, deep 32 GB packet buffers, and Ultra Ethernet RDMA optimisations (DCQCN, PFC, ECN) directly address the congestion-sensitive traffic patterns of large-scale AI workloads.

Q: How many 800G ports can the Arista 7804R4 system support?
A: With appropriate R4 800G line cards installed, the 7804R4 system can support up to 576 wire-speed 800G ports across the full chassis, with a total system fabric capacity of 460 Tbps (920 Tbps full-duplex).

Q: Is the 7804R4 backward compatible with existing 7800R3 deployments?
A: Yes. Existing 7800R3 chassis systems can be upgraded to R4 specification, protecting prior infrastructure investments while enabling access to the higher throughput and 800G port densities of the R4 generation.

Q: What DC power input does the 7804R4 bundle support?
A: The six included 3kW D2 DC power supplies accept dual DC inputs across two ranges: -40V to -72V (LVDC) or 240V to 380V (HVDC). Each supply is internally redundant, and the system supports 1+1 grid redundancy for continuous operation during a power feed failure.

Q: Can I purchase the Arista 7804R4 chassis bundle in Australia through IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware reseller offering the DCS-7804R4-BNDA-U-DC with competitive pricing and local support. Contact the team for volume pricing, lead times, and configuration advice.

Datasheet

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