• Silver-colored arista dcs-7804-fm rack-mounted fabric module with grid ports and ventilation slots for 7804 chassis back side
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Arista

Arista DCS-7804-FM | 7800R3 Fabric Module for 7804 Chassis, Slots 1-6

DCS-7804-FM

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Description

The Arista DCS-7804-FM is a high-performance fabric module designed for the 7800R3 Series modular data center chassis. Required for fabric slots 1-6 in the DCS-7804 chassis, this module provides non-blocking cell-based fabric interconnection between line cards, enabling up to 115 Tbps throughput. Featuring graceful degradation redundancy and user-serviceable fans, it delivers enterprise-class reliability for demanding data center environments.

Features

Cell-based fabric architecture for 100% lossless, non-blocking performance across all ports
- Supports up to 115 Tbps aggregate chassis throughput with full fabric redundancy
- Hot-swappable design with graceful degradation for zero-downtime maintenance
- Four user-serviceable fan modules for redundant, field-replaceable cooling
- Compatible with all Arista 7800R3 and 7800R3A line cards
- Integrated with Arista EOS for unified management and orchestration
- Optimized for high-density 50G, 100G, and 400G data center spine deployments
- Supports advanced features including VXLAN, MPLS, and large routing tables
- Active-active fabric operation with automatic load distribution
- Enterprise-grade reliability with front-to-rear or rear-to-front airflow options

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: Fabric module for Arista 7800R3 Series
- Chassis Compatibility: DCS-7804 chassis (required for fabric slots 1-6)
- Power Consumption: 180W typical, 248W maximum
- Dimensions (H x W x D): 2.5 x 11.8 x 22.70 inches (6.4 x 30 x 57.6 cm)
- Weight: 20 lbs (9.1 kg)
- Cooling: User-serviceable fan modules (4 fan modules)
- Redundancy: Graceful degradation supported
- Installation: Hot-swappable with ejector lever mechanism
- Fabric Architecture: Cell-based, non-blocking, 100% lossless
- Management: Integrated with Arista EOS operating system

FAQs

Q: How many DCS-7804-FM fabric modules are required for the 7804 chassis?
A: Six fabric modules are required for full operation of the DCS-7804 chassis, populating fabric slots 1-6. This configuration provides redundant, non-blocking fabric connectivity for all line cards.

Q: Is the DCS-7804-FM hot-swappable?
A: Yes, the fabric module is hot-swappable and supports graceful degradation. The system continues to operate with reduced capacity if a fabric module is removed or fails, allowing for maintenance without full system downtime.

Q: What line cards are compatible with the DCS-7804-FM fabric module?
A: The DCS-7804-FM supports all Arista 7800R3 and 7800R3A line cards, providing flexible options for 50G, 100G, and 400G port densities with support for FlexRoute, Accelerated sFlow, and Algorithmic ACLs.

Q: Can I mix DCS-7804-FM with other 7800 Series fabric modules?
A: The DCS-7804-FM is specifically designed for the 7804 chassis. Different 7800 Series chassis (7808, 7812, 7816) require their corresponding fabric modules. Always use the correct fabric module model for your specific chassis.

Q: What is the typical power draw and cooling requirement?
A: The module consumes 180W typical power (248W maximum) and includes four user-serviceable fan modules for active cooling. The fans are field-replaceable, contributing to the overall high availability design of the 7800R3 platform.

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