Cisco N9K-C9300-FAN3 Full English Description

Product Overview

Important Note: This fan tray is platform-locked hardware.Mixing fan generations (FAN / FAN2 / FAN3) or mixing intake/exhaust airflow directions within one chassis is strictly unsupported and will trigger thermal alarms and overheating risks.All fan trays and power supplies deployed in the same chassis must share identical airflow direction. Individual fans inside the tray cannot be replaced separately; the whole FRU must be swapped upon internal fan failure. Standard ESD anti-static protocols must be followed during handling and replacement.

Key Features

1. Intelligent Variable-Speed Thermal Regulation

   The fan tray dynamically adjusts fan rotational speed based on real-time internal chassis temperature, altitude and thermal load of installed ports. Fans operate at low RPM under light workloads to cut power draw and noise, and automatically ramp up airflow as temperatures rise. Continuous multi-zone thermal telemetry is reported to Cisco NX-OS or ACI firmware for full environmental monitoring.
2. Front-to-Back (Port-Side Intake) Airflow Architecture

   Airflow Direction: Air intake from front port panel → exhaust toward chassis rear. This layout complies with standard hot-aisle / cold-aisle data center rack specifications. Operators must ensure front intake vents and rear exhaust openings stay unobstructed to preserve rated cooling efficiency. Reverse airflow alternative: N9K-C9300-FAN3-B (Back-to-Front).
3. OIR (Online Insertion and Removal) Support

   Technicians can replace the fan tray without powering off or rebooting the Nexus 9300 switch. All maintenance operations are performed from the chassis rear panel, supporting non-disruptive servicing for mission-critical data center leaf fabrics. At least two functional fan trays must remain installed during replacement activities.
4. Visual Status LED & Remote Monitoring

   Built-in status LED 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. N+1 Redundant Cooling Capability

   Multiple independent fans are integrated within each tray assembly. If one internal fan unit malfunctions, remaining operational fans automatically accelerate to sustain temporary cooling capacity. Administrators should arrange replacement promptly to eliminate single-point thermal failure risks.
2. Enhanced Data Center-Grade Reliability

   Optimized low-noise industrial bearing fan assembly engineered for 24/7 continuous operation in enterprise and cloud data center leaf layers. The Gen3 design lowers vibration and extends service life for medium-density 10G/40G Ethernet workloads.

Supported Hardware Platforms

• Cisco Nexus 9300 Gen1 Fixed Switches:
  N9K-C9396PX, N9K-C9396TX, N9K-C93128TX, N9K-C9336PQ

Not compatible: Nexus 9300-FX / FX3 / GX series, Nexus 9500 / 9800 modular chassis, Nexus 7000 family, Catalyst 4500/6500 switches and all Cisco router platforms.

Typical Application Scenarios

• Data center leaf deployments built on Gen1 Nexus 9300 switches running NX-OS standalone or ACI fabric mode
• Upgraded high-efficiency spare replacement cooling assembly for Nexus 9300 Gen1 chassis
• Medium-density 10G/40G data center access and aggregation fabrics
• Mission-critical cloud infrastructure requiring hot-swappable non-disruptive maintenance

Technical Specifications

• Form Factor: Rear-mounted Gen3 high-efficiency hot-swappable fan tray for Nexus 9300 Gen1 fixed switches
• Airflow Direction: Front-to-Back (Port-side Intake, burgundy stripe)
• Reverse Airflow Variant: N9K-C9300-FAN3-B (Back-to-Front, blue stripe)
• Hot Swappable: Yes (OIR supported under NX-OS / ACI firmware)
• Weight: 1.42 lb (0.64 kg)
• Power Feed: Powered via chassis rear backplane
• Monitoring: Rear status LED + NX-OS environmental logging & SNMP traps
• Chassis Fan Capacity: Maximum three fan trays; minimum two active trays required
• Operating Ambient Temperature: 0°C ~ +40°C
• Compliance: UL60950-1, EN60950-1, FCC Class A, CE certified, RoHS compliant

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