• Silver-colored arista dcs-7804r4-fm rack-mounted network switches with ports and ventilation slots for 7804 chassis
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Arista

Arista DCS-7804R4-FM | 7800R4 Fabric Module for 7804 Chassis

DCS-7804R4-FM

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Description

The Arista DCS-7804R4-FM is a fabric module designed specifically for the 7800R4 Series 4-slot modular chassis. This FM-R4 fabric module is essential for enabling high-speed fabric connectivity in data center spine and AI/ML infrastructure deployments. It supports graceful degradation for enhanced system redundancy and features user-serviceable fans for simplified maintenance.

Features

Graceful fabric degradation for continued operation with reduced module count
- Hot-swappable design with user-serviceable fan modules
- Supports ultra-high-speed fabric capacity up to 460 Tbps per system
- Optimized for AI/ML training clusters and high-performance computing
- Sub-4-microsecond latency for low-latency applications
- 100% lossless cell-based fabric architecture
- Front-to-rear airflow design for efficient data center cooling
- Arista EOS integration for unified management and automation
- Supports 100G, 200G, 400G, and 800G port speeds
- Compatible with EVPN, MPLS, VXLAN, and advanced routing protocols

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

Fabric Module: DCS-7804R4-FM for 7804 chassis compatibility
- Redundancy: Graceful degradation supported
- Dimensions (HxWxD): 2.5" x 12.4" x 23.70" (6.4 x 31.4 x 60.1 cm)
- Weight: 21 lbs (9.5 kg)
- Typical Power Consumption: 308W
- Maximum Power Consumption: 424W
- User Serviceable Fans: Yes (4 Fan Modules)
- Chassis Support: DCS-7804 (Slots 1-5)
- System Fabric Capacity: Supports up to 460 Tbps (920 Tbps full-duplex)
- Management: Arista EOS operating system

FAQs

Q: What chassis is the DCS-7804R4-FM compatible with?
A: The DCS-7804R4-FM fabric module is specifically designed for the Arista DCS-7804 chassis and must be installed in fabric slots 1-5. Five FM-R4 modules are typically required for full system operation, with slot 6 reserved for a fabric cooling module (FCM).

Q: How many fabric modules are needed for a 7804R4 chassis?
A: A fully operational DCS-7804R4 chassis typically requires five FM-R4 fabric modules installed in slots 1-5. The system supports graceful degradation, allowing operation with fewer modules at reduced performance levels.

Q: Can I upgrade a 7800R3 system to R4 specification?
A: Yes, existing 7800R3 systems can be upgraded to 7800R4 specification by replacing the R3 fabric modules with R4 fabric modules and installing compatible R4 line cards. This provides a migration path to higher performance and capacity.

Q: What is the power consumption of the DCS-7804R4-FM?
A: The DCS-7804R4-FM fabric module has a typical power consumption of 308W and a maximum power consumption of 424W. When planning power requirements, ensure your power supply configuration can support all installed fabric modules plus line cards and supervisors.

Q: Are the fan modules user-serviceable?
A: Yes, the DCS-7804R4-FM includes four user-serviceable fan modules that can be replaced in the field without specialized tools. This hot-swappable design ensures minimal service disruption during maintenance operations.

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