Cisco N9K-C9516-FAN Full English Description

Product Overview

Important Note: This fan tray is chassis-specific hardware.Mixing N9K-C9516-FAN and N9K-C9516-FAN2 within a single chassis is unsupported. Individual fans inside the tray cannot be serviced separately; the entire tray assembly must be replaced after internal fan failure. If more than one fan tray is removed simultaneously, the chassis will initiate thermal protection shutdown within minutes 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 internal chassis temperature, operating altitude, and thermal load of installed modules. Fans operate at low RPM under light workloads to reduce acoustic noise and power consumption, and automatically increase airflow when temperatures rise. All thermal telemetry data is continuously reported to Cisco NX-OS or ACI firmware for persistent environmental monitoring.
2. Front-to-Back (Port-Side Intake) Airflow Architecture

   Airflow Direction: Air intake from front port panel → exhaust toward chassis rear. This airflow design complies with industry-standard hot-aisle / cold-aisle data center rack specifications. Operators must ensure front intake vents and rear exhaust openings remain unobstructed to preserve rated cooling efficiency. All power supplies and fan trays within the chassis must adopt identical airflow direction.
3. OIR (Online Insertion and Removal) Support

   Technicians can replace the fan tray without powering off or rebooting the Nexus 9516 switch. All maintenance operations are performed from the chassis rear panel, supporting non-disruptive servicing for mission-critical large-scale data center spine fabrics. At least two functional 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. Internal Fan Compensation Design

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

   Industrial long-life bearing fan assembly engineered for 24/7 continuous operation in enterprise and carrier-grade cloud data center spine layers. Optimized to dissipate heat generated by medium thermal-density 25G/100G Ethernet line cards and standard fabric modules.

Supported Hardware Platforms

• Cisco Nexus 9516 Modular Spine Switch Chassis (N9K-C9516)

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

Compatibility Reminder: N9K-C9516-FAN isnot supportedwith high-power N9K-C9516-FM-G fabric modules; N9K-C9516-FAN2 is mandatory for FM-G deployments.

Typical Application Scenarios

• Large-scale data center spine layer deployments built on Nexus 9516 switches with standard fabric modules
• Spare replacement baseline cooling assembly for failed fan trays on Nexus 9516 chassis
• Network environments equipped with medium thermal-load multi-rate Ethernet line cards
• Mission-critical ACI or NX-OS data center infrastructure requiring hot-swappable non-disruptive maintenance

Technical Specifications

• Form Factor: Rear-mounted baseline hot-swappable fan tray for Nexus 9516 chassis
• Airflow Direction: Front-to-Back (Port-side intake)
• Hot Swappable: Yes (OIR supported under NX-OS / ACI firmware)
• Maximum Power Consumption: 330W per fan tray
• Weight: 11.5 lb (5.22 kg)
• Power Feed: Powered via chassis rear midplane backplane
• Monitoring: Rear status LED + NX-OS environmental logging & SNMP traps
• Minimum Operational Requirement: At least two fan trays installed
• Operating Ambient Temperature: 0°C ~ +40°C
• Compliance: UL60950-1, EN60950-1, FCC Class A, CE certified, RoHS compliant

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