HP Cisco MDS 9120 Cisco MDS 9100 Series Hardware Installation Guide (OL-17951- - Page 20

Power Supplies, Fan Modules

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Power Supplies Chapter 1 Product Overview Send documentation comments to [email protected] Power Supplies The Cisco MDS 9100 Series supports dual AC and DC 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 B-2.) Note The new DC power supply is not supported on the Cisco MDS 9140 Switch and the Cisco MDS 9120 Switch. 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 2-26. 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 1-5. Figure 1-5 Reset Button on the Side of the Cisco MDS 9134 Switch 184098 Reset button Fan Modules The Cisco MDS 9140 Switch, the Cisco MDS 9134 Switch, and the Cisco MDS 9120 Switch support two hot-swappable fan modules that allow the switches to continue to run if a fan module is removed, provided that the preset temperature thresholds have not been exceeded. You can swap out a fan module without having to bring the system down. Each fan module on the Cisco MDS 9134 Switch has two fans. The Cisco MDS 9124 Switch includes three fixed fans and an additional fan in each removable power supply. For normal operation, the Cisco MDS 9124 Switch requires four fans. Cisco MDS 9100 Series Hardware Installation Guide 1-6 OL-17951-02

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Send documentation comments to [email protected]
1-6
Cisco MDS 9100 Series Hardware Installation Guide
OL-17951-02
Chapter 1
Product Overview
Power Supplies
Power Supplies
The Cisco MDS 9100 Series supports dual AC and DC 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 B-2
.)
Note
The new DC power supply is not supported on the Cisco MDS 9140 Switch and the Cisco MDS 9120
Switch.
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 2-26
.
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 1-5
.
Figure 1-5
Reset Button on the Side of the Cisco MDS 9134 Switch
Fan Modules
The Cisco MDS 9140 Switch, the Cisco MDS 9134 Switch, and the Cisco MDS 9120 Switch support
two hot-swappable fan modules that allow the switches to continue to run if a fan module is removed,
provided that the preset temperature thresholds have not been exceeded. You can swap out a fan module
without having to bring the system down. Each fan module on the Cisco
MDS
9134 Switch has two fans.
The Cisco MDS 9124 Switch includes three fixed fans and an additional fan in each removable power
supply. For normal operation, the Cisco MDS 9124 Switch requires four fans.
184098
Reset button