• Silver-colored Arista DCS-7816L 7800 16-slot modular chassis with rack-mounted network switches and ventilation slots
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Arista

Arista DCS-7816L | 7800 16-Slot Modular Chassis, 32RU, 2 Supervisor Slots

DCS-7816L

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Description

The Arista DCS-7816L is a high-capacity 16-slot modular chassis designed for the 7800R3 and 7800R4 series data center switches. This 32RU chassis supports up to 16 line cards, 2 supervisor modules, and 6 fabric modules, with flexible AC or DC power options. Ideal for large-scale data center spine, core, and AI cluster deployments requiring maximum scalability and investment protection.

Features

32RU modular chassis supporting up to 16 high-density line cards
- Compatible with both 7800R3 and 7800R4 series line cards for investment protection
- Dual supervisor module slots for full control plane redundancy
- Six fabric module slots enabling non-blocking, lossless fabric architecture
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- Front-to-rear cooling optimized for data center hot aisle/cold aisle deployments
- Hot-swappable components including supervisors, fabrics, power supplies, and fans
- Supports AC (HVAC) and DC (HVDC/LVDC) power supply options
- Extended depth rack rails included for flexible cabinet mounting
- Arista EOS operating system support with full L2/L3 routing, EVPN, VXLAN, and MPLS
- Purpose-built multi-chip system with distributed end-to-end scheduling
- Supports up to 576x 400GbE or 800GbE ports depending on line card configuration
- Deep packet buffers with up to 32GB per line card for lossless forwarding

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

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

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Technical Specifications

FAQs

Technical Specifications

Form Factor: 32RU modular chassis
- Line Card Slots: 16 slots for 7800R3 or 7800R4 line cards
- Supervisor Slots: 2 slots for redundant supervisors
- Fabric Module Slots: 6 slots for high-speed fabric modules
- Maximum Throughput: Up to 576x 400GbE (7800R3) or 576x 800GbE (7800R4) depending on line card configuration
- Power Options: AC or DC power supply support (up to 12x 3kW power supplies)
- Cooling: Front-to-rear airflow with hot-swappable fan modules
- Rack Mounting: 4-post rack mount with extended depth rails included
- Management: Compatible with Arista EOS operating system via supervisor modules
- Redundancy: Full system redundancy support for supervisors, fabric, power, and cooling

FAQs

Q: What line cards are compatible with the DCS-7816L chassis?
A: The DCS-7816L supports both 7800R3 and 7800R4 series line cards, including 400GbE QSFP-DD and 800GbE OSFP variants. It can accommodate any mix of compatible line cards up to 16 cards total, providing flexibility for density, speed, and scale requirements.

Q: Can I upgrade a 7800R3 chassis to R4 specifications?
A: Yes, existing DCS-7816L chassis deployed with 7800R3 components can be upgraded to 7800R4 capabilities by installing R4 fabric modules and R4 line cards, protecting your infrastructure investment while gaining 800GbE port support.

Q: How many power supplies does the DCS-7816L require?
A: The DCS-7816L supports up to 12 power supply modules (3kW each) for full redundancy. The exact number depends on line card configuration and redundancy requirements, with both N+N and N+1 redundancy options available.

Q: What applications is the DCS-7816L best suited for?
A: The DCS-7816L is designed for large-scale data center spine and core switching, AI/ML cluster interconnects, cloud provider networks, and service provider backbones requiring maximum port density, throughput, and investment protection.

Q: Does the chassis ship with supervisors, fabric modules, or power supplies?
A: The DCS-7816L is the bare chassis only. Supervisor modules, fabric modules, line cards, power supplies, and fan modules must be ordered separately or as part of a complete chassis bundle configuration.

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