The DCS-7804R4-BNDA-U-DC is a factory bundle of the Arista 7800R4 Series – the 800GbE generation of the 7800 modular platform, built for AI cluster spine, accelerated computing, and next-generation core roles. The 7804 chassis provides 4 line card slots and scales to 144 x 800GbE ports (288 x 400GbE / 1152 x 100GbE with breakout) and 115 Tbps (230 Tbps full duplex) of throughput.
What This Bundle Includes
Per the Arista ordering specification, the DCS-7804R4-BNDA-U-DC includes: 7804 chassis, 6x 3 kW D2 DC power supplies, 5x 7804R4-FM fabric modules, 1x 7804-FCM fabric cooling module, 1x 7800-Sup1A supervisor, extended rack kit.
7800R4: The 800G Generation
The 7800R4 Series extends the 7800 platform to 800GbE with the same fully scheduled, cell-based, internally lossless architecture – Virtual Output Queues, distributed credit scheduling, and deep buffering – purpose-built for AI/accelerated-computing clusters and next-generation data center and service provider cores. R4 systems use five R4 fabric modules (slots 1-5) plus a fabric cooling module (slot 6) per chassis.
Key Specifications
Line card slots: 4 (7800R4 Series 800GbE line cards)
Power supply slots: 8 (24 kW max power budget), grid-redundant
Maximum density: 144 x 800GbE, 288 x 400GbE, or 1152 x 100GbE (with breakout, per datasheet density tables)
Maximum throughput: 115 Tbps (230 Tbps full duplex)
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; 447 lbs (203 kg) fully configured (R4)
Maximum system power: 6,801 W (excluding optics)
Airflow: front-to-rear (port side to fan side)
Operating temperature: 0 to 40 C (32 to 104 F)
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-7804R4-BNDA-U-DC 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-7804R4-BNDA-U-DC bundle?
Per the Arista ordering specification: 7804 chassis, 6x 3 kW D2 DC power supplies, 5x 7804R4-FM fabric modules, 1x 7804-FCM fabric cooling module, 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.
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-7804R4-BNDA-U-DC
Platform: Arista 7800R4 Series (800GbE) modular chassis bundle
