• 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 7800R3 Series fabric module for the 7804 chassis provides the switching fabric that interconnects every line card in the 4-line-card-slot 7804R3 modular system. It is aimed at large-scale data centre spine, cloud, overlay, internet peering and data centre interconnect deployments, and also suits spare or replacement use.

Six modules are required per chassis, populating fabric slots 1-6. Each module draws 180 W typical and 248 W maximum, powered from the chassis backplane, so the six-module set draws 1,080 W typical and about 1,488 W maximum. The 7804 chassis offers 8 power supply slots and a 24 kW maximum power budget. Each module includes 4 user-serviceable fan modules, measures 2.5 in x 11.8 in x 22.7 in (6.4 x 30 x 57.6 cm) and weighs 20 lbs (9.1 kg).

The fabric is always active-active and hot-swappable, and it degrades gracefully if a module fails. No licence is required for the fabric module itself. It is designed for the DCS-7804 chassis only and is not interchangeable with the 7808, 7812, 7816 or 7816L fabric modules.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Interconnects all line cards in a non-blocking architecture
- Cell-spraying fabric with any-port-to-any-port connectivity and no drops
- Always active-active, redundant and hot-swappable
- Individually serviceable fans for flexible and redundant cooling
- Graceful performance degradation if a fabric module fails, as the fabric is over-provisioned

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-7804R3-FM
- Chassis support: DCS-7804 only (fabric slots 1-6)
- Modules required per chassis: 6
- Typical power: 180 W per module
- Maximum power: 248 W per module
- Redundancy: graceful degradation supported
- Hot-swappable: Yes
- User-serviceable fans: Yes (4 fan modules)
- Dimensions (H x W x D): 2.5 in x 11.8 in x 22.7 in (6.4 x 30 x 57.6 cm)
- Weight: 20 lbs (9.1 kg)
- 7804 chassis line card slots: 4
- 7804 chassis power supply slots: 8 (24 kW maximum power budget)

FAQs

Q: How many fabric modules does a 7804 chassis need?
A: Six modules are required per chassis, populating fabric slots 1-6.

Q: Does this fabric module need a licence?
A: No. It is a hardware component of the chassis and requires no licence of its own.

Q: How much power does each module draw?
A: Each module draws 180 W typical and 248 W maximum from the chassis backplane. Six modules draw 1,080 W typical and about 1,488 W maximum in total.

Q: Can it be used in a 7808, 7812 or 7816 chassis?
A: No. It is for the DCS-7804 chassis only. Larger 7800R3 chassis use their own fabric modules, such as DCS-7808R3-FM, DCS-7812R3-FM, DCS-7816R3-FM and DCS-7816LR3-FM.

Q: What happens if one fabric module fails?
A: The fabric is over-provisioned and active-active, so performance degrades gracefully rather than the chassis going offline. The modules are also hot-swappable.

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