Arista DCS-7804-CH | 7800R4 Modular Chassis, 4 Line Card Slots, 10RU

Q: What line cards are compatible with the DCS-7804-CH chassis?
A: The DCS-7804-CH supports both 7800R3 and 7800R4 series line cards, offering flexible deployment options from 100GbE to 800GbE interfaces. Line cards are purchased separately and can be mixed within the same chassis for phased upgrades.

Q: Does the DCS-7804-CH support both AC and DC power?
A: Yes, the chassis accepts both AC and DC power supply options. DC power supplies support dual input ranges: -40V to -72V (LVDC) or 240V to 380V (HVDC), with 1+1 grid redundancy for continuous operation.

Q: What is the maximum port capacity of a fully populated DCS-7804 chassis?
A: With 7800R4 line cards installed, the chassis supports up to 144 wire-speed 800GbE ports, 288 x 400GbE ports, or 1152 x 100GbE ports, depending on the line card configuration and breakout options used.

Q: Is the DCS-7804-CH suitable for AI/ML cluster interconnects?
A: Yes, when equipped with R4 line cards, the chassis is purpose-built for AI/ML training fabrics with 100% lossless cell-based fabric architecture, Virtual Output Queuing (VoQ), deep packet buffering, and Ultra Ethernet RDMA optimizations.

Q: Can I upgrade an existing 7800R3 chassis to R4 specification?
A: Yes, existing 7800R3 chassis can be upgraded to R4 specification by installing R4 fabric modules and line cards, protecting prior investments while enabling access to higher throughput and 800GbE port densities.