Cisco N9K-C9808-FAN-A Full English Description

Product Overview

Important Note: This fan tray is chassis-specific hardware designed only for Nexus 9808. It cannot be used with Nexus 9804, Nexus 9500 series or other Cisco switching platforms. Individual fans inside the tray are not field-replaceable; the entire tray assembly must be swapped after internal fan failure. All installed fan trays and power trays within one chassis must adopt identical airflow direction. Loss of multiple fan trays will trigger thermal protection mechanisms to avoid permanent hardware damage caused by overheating. Standard ESD anti-static procedures must be followed during module handling and replacement.

Key Features

1. Intelligent Variable-Speed Thermal Regulation

   The fan tray dynamically adjusts fan rotational speed based on real-time chassis internal temperature, altitude and thermal load of installed fabric and line cards. Fans operate at low RPM under light workloads to reduce power consumption and acoustic noise, and automatically ramp up airflow when temperatures rise. Continuous thermal telemetry data is reported to Cisco NX-OS for comprehensive environmental monitoring.
2. Front-to-Back (Port-Side Intake / A-Airflow) Architecture

   Airflow Direction: Air intake from front port panel → exhaust toward chassis rear. This airflow design fully complies with standard hot-aisle / cold-aisle data center rack layout. Operators shall ensure front intake vents and rear exhaust openings remain unobstructed to maintain rated cooling efficiency.
3. OIR (Online Insertion and Removal) Support

   Technicians can replace the fan tray without powering off or rebooting the Nexus 9808 switch. All maintenance operations are performed from the chassis rear panel, supporting non-disruptive servicing for mission-critical large-scale cloud data center spine fabrics. Sufficient remaining operational fan trays must stay installed during replacement activities.
4. Rear Panel Visual Status LED & Remote Monitoring

   Built-in status LED indicator on the rear face provides instant local visual feedback:

• Solid Green: All internal fans operate normally
• Solid Amber/Red: Fan fault or over-temperature alarm detected
  NX-OS generates environmental syslog entries and sends SNMP traps to centralized monitoring systems immediately once fan anomalies are detected.

1. High-Capacity Redundant Cooling Design

   Equipped with multiple independent high-speed fans inside each tray. If one internal fan unit malfunctions, remaining functional fans automatically accelerate to sustain temporary cooling capacity. Administrators should arrange replacement promptly to eliminate thermal single-point-of-failure risks.
2. Carrier & Cloud Data Center-Grade Reliability

   Industrial long-life bearing fan assembly engineered for 24/7 continuous operation in high-performance cloud and service provider data center spine layers. Optimized to dissipate heat generated by high-density 100G/400G multi-rate Ethernet line cards and N9K-C9808-FM-A fabric modules.

Supported Hardware Platforms

• Cisco Nexus 9808 Modular Spine Switch Chassis (N9K-C9808)

Not compatible: Nexus 9804, Nexus 9504 / 9508 / 9516, Nexus 7000 family, Catalyst 4500 / 6500 switches and all Cisco router platforms.

Typical Application Scenarios

• Large-scale cloud data center spine layer deployments built on Nexus 9808 modular switches
• Spare replacement cooling assembly for failed fan trays on Nexus 9808 high-density chassis
• Network environments equipped with high-power 400G line cards and first-generation fabric modules
• Mission-critical NX-OS data center infrastructure requiring hot-swappable non-disruptive maintenance

Technical Specifications

• Form Factor: Rear-mounted Gen1 hot-swappable fan tray for Nexus 9808 chassis
• Airflow Direction: Front-to-Back (Port-side intake / A-airflow)
• Hot Swappable: Yes (OIR supported under NX-OS)
• Maximum Power Consumption: 686W per fan tray
• Power Feed: Powered via chassis rear midplane backplane
• Monitoring: Rear status LED + NX-OS environmental logging & SNMP traps
• Chassis Fan Capacity: Up to four N9K-C9808-FAN-A trays (N+1 redundancy)
• Operating Ambient Temperature: 0°C ~ +40°C
• Compliance: UL60950-1, EN60950-1, FCC Class A, CE certified, RoHS compliant

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