The DCS-7804R3-BND is a factory bundle configuration of the Arista 7800R3 Series, Arista’s flagship modular platform for spine, AI, and service provider core roles. The 7804 chassis provides 4 line card slots, two supervisor slots, and 6 fabric module slots in a 10 RU footprint, scaling to 144 x 400GbE ports and 115 Tbps / 24 Bpps of throughput.
What This Bundle Includes
Per the Arista ordering specification, the DCS-7804R3-BND includes: 7804 chassis, 6x 3 kW D1 AC power supplies, 6x 7804R3-FM fabric modules, 1x 7800-Sup1A supervisor, extended rack kit.
Fully Scheduled Lossless Architecture
The 7800R3 platform is a purpose-built multi-chip system with end-to-end scheduling: a cell-based fabric sprays uniform cells across all fabric links, Virtual Output Queues eliminate head-of-line blocking, distributed credit scheduling keeps every egress port independent, and deep buffers absorb in-cast and bursts without packet loss. Even the largest 16-slot, 576 x 400GbE configuration behaves like a single, internally lossless switching chip – ideal for AI clusters, cloud data centers, and service provider cores.
Key Specifications
Line card slots: 4 (any mix of 7800R3 and 7800R3A line cards)
Power supply slots: 8 (24 kW max power budget), grid-redundant
Maximum density: 144 x 400GbE or 576 x 100GbE (with breakout, per datasheet density tables)
Maximum throughput: 115 Tbps / 24 Bpps
Dimensions (HxWxD): 17.2 x 17.4 x 37.0 in (43.6 x 44.1 x 94 cm); 10 RU
Weight: 163 lbs (74 kg) chassis only; 448 lbs (203 kg) fully configured
Maximum system power: 9,121 W (excluding optics)
Airflow: front-to-rear (port side to fan side)
Operating temperature: 0 to 40 C (32 to 104 F)
Modular Serviceability
Supervisors, line cards, and power supplies install from the front; fabric modules install from the rear. The midplane-less design connects line cards directly to fabric modules, and fan and power modules are field-replaceable for in-service maintenance.
Deployment Scenarios
AI cluster spine: the fully scheduled VOQ fabric keeps GPU-to-GPU traffic lossless and fair under the low-entropy, high-bandwidth patterns AI training generates
Cloud and enterprise data center core: one 4-slot system consolidates spine capacity that would otherwise take racks of fixed switches
Service provider core / peering: deep buffers plus FlexRoute-scale tables in a single managed chassis
Long-lifecycle investment: the chassis accepts successive line card generations, so capacity upgrades do not require replacing the chassis, power, or cabling plant
Which 7800 Chassis Size Fits?
The 7800 family scales by slot count: 7804 (4 slots, 10 RU) for pod-scale or edge cores, 7808 (8 slots, 16 RU) – the most common mid-size build, 7812 (12 slots, 23 RU), and 7816/7816L (16 slots, 32 RU) for maximum-scale spines. All sizes share supervisors within their group, the same 3 kW power supplies, and the same line cards – so a fabric standardized on 7800 hardware keeps one operational model as it grows.
Frequently Asked Questions
How many line cards does the DCS-7804R3-BND hold?
The 7804 configuration provides 4 line card slots, 2 supervisor slots, and accepts any mix of supported 7800 line cards.
What is included in the DCS-7804R3-BND bundle?
Per the Arista ordering specification: 7804 chassis, 6x 3 kW D1 AC power supplies, 6x 7804R3-FM fabric modules, 1x 7800-Sup1A supervisor, extended rack kit.
What airflow direction does the Arista 7800 Series use?
All 7800 chassis are front-to-rear airflow (port side intake to fan side exhaust), designed for standard hot-aisle/cold-aisle data centers.
What power supplies does the 7804 use?
All 7800 chassis use common 3 kW power supplies in grid-redundant arrangements – AC (PWR-D1), DC (PWR-D2), or HVAC/HVDC (PWR-D4) versions.
Do I still need to buy line cards separately?
Yes – 7800 bundles include chassis, power, fabric, and supervisor(s); line cards and optics are configured to order. BrightStar can quote a complete configured system.
Related 7800 Series Products
DCS-7804-CH – the bare 7804 chassis if you are building a custom configuration
BrightStar Systems supplies professionally tested refurbished Arista 7800 Series hardware. Every unit is inspected, tested on original-spec firmware, factory reset, and configuration wiped before shipment, and backed by our standard warranty. Modular systems and line cards of this class are typically project-priced – request a quote for current availability and pricing.
SPECIFICATIONS
Model: DCS-7804R3-BND
Platform: Arista 7800R3 Series modular chassis bundle
