Chapter 1 Product Overview
Power Supplies
Power Supplies
The Cisco MDS 9100 Series supports dual AC power supplies. Each power supply provides sufficient power to maintain switch operation in the event of a single power supply failure. Power supplies are hot swappable and can be individually replaced without disruption to the system. (See the “Power Specifications” section on page
Caution Power supplies for the Cisco 9100 Series look similar but they differ slightly. Be sure to use the correct power supply designated for your Cisco 9100 Series switch. Using an incorrect power supply will not provide redundant power in the case of a power supply failure.
The power supply has two LEDs, AC ok and DC ok. Power supply status is also indicated on a front panel LED.
Procedures for replacing and installing the power supplies are available in the “Removing and Installing Components” section on page
The Cisco MDS 9124 Switch includes a front panel reset button that resets the switch without cycling the power.
The Cisco MDS 9134 Switch includes a reset button on the left side of the switch as shown in Figure
Figure 1-5 Reset Button on the Side of the Cisco MDS 9134 Switch
Reset button
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Fan Modules
The Cisco MDS 9140 Switch, the Cisco MDS 9134 Switch, and the Cisco MDS 9120 Switch support two
Cisco MDS 9100 Series Hardware Installation Guide
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