Fan tray
Each Cisco C9610R chassis uses field-replaceable fan trays (C9610-FAN) for cooling. The fan trays are accessed from the rear only for flexible cable management. The chassis is optimized for enterprise campus wiring closets and rack rooms with front-to-back airflow. The fan tray is composed of nine independently controlled fans. If any single fan fails, the system will continue to operate without a significant degradation in cooling, as fan speeds change dynamically to compensate for fan failure.
Cisco C9610 Series Smart Switches fans have a barometric sensor, which allows slower fan speed curves at lower altitudes. The fans also have individual pulse-wide modulation (PWM) fine-tuning to reduce variability in fan revolutions per minute (rpm) under throttled conditions. The measured acoustic noise in a formal network equipment-building system (NEBS) test environment is 77.7 LWAd (dB). The C9610R chassis is designed to accommodate single fan tray replacement operation of up to 180 seconds to enable serviceability.
Power supplies
The Cisco C9610 Series Smart Switches and Catalyst 9600 Series share the same power supply units (PSUs) and support two modes of operation.
Combined mode
The default Cisco C9610R chassis power supply mode is “Combined.” In Combined mode, the total power available for the entire chassis is equal to the sum of the output of all the power supplies multiplied by the share ratio. Additional power supply units operate at ~90% capacity. In Combined mode, the power supplies need to be of equal wattage. The power supplies can be AC and DC mixed as long as the AC input is 220V.
- P = Power output of one PSU
- N = Number of PSUs (1 to 8)
- Total combined power = P + (N-1) * P * (share ratio)
Redundant N+1 mode
The Cisco C9610R chassis also supports N+1 redundancy mode, with N independent input circuits and safeguards against the failure of one (+1) of the circuits during a PSU failure. Additional PSUs operate at ~90% capacity. In redundant mode, the power supplies need to be of equal wattage. The power supplies can be AC and DC mixed as long as the AC input is 220V.
- N = number of PSUs are active (1 to 7)
- +1 is the PSU reserved for redundancy
Redundant N+N mode
The Cisco C9610R chassis also supports N+N redundancy mode, with N independent input circuits and safeguards against the failure of any one or more of the active PSUs. Additional PSUs operate at ~90% capacity. In redundant mode, the power supplies need to be of equal wattage. The power supplies can be AC and DC mixed provided AC input is 220V.
- N = number of PSUs are active (1 to 4)
- +N are the PSUs reserved for redundancy (1 to 4)
Note: 3KW power supplies operate at 22V are required for system to operate with N+N redundancy.
For more information, please visit the Cisco C9610 Series Smart Switch System Management Configuration Guide.