Cisco MDS 9700 Series Hardware Installation Manual page 105

Installing the Cisco MDS 9700 Series Switches
Warning
• Verify that the bottom-support rails have been attached to the lowest possible RU in the rack or cabinet
and there is 14 RU (24.5 inches [62.2 cm]) of space above the rails to install the chassis.
• For Cisco MDS 9718 chassis, verify that the bottom-support rails have been attached to the lowest
possible RU in the rack or cabinet and there is 25 RU (43.75 inches [111 cm]) of space above the rails
to install the chassis.
• If there are other devices in the rack, verify that the devices that are heavier than this chassis are installed
below where you are going to install the chassis and lighter devices are installed above where you are
going to install the chassis.
• Verify that the data center ground is accessible where you are installing the chassis.
• Verify that you have the following tools and equipment:
Caution
Caution
Warning
Installing the Cisco MDS 9710 and MDS 9718 Series Switch on a Four-Post Rack or Cabinet
Stability hazard
The rack stabilizing mechanism must be in place, or the rack must be bolted to
the floor before you slide the unit out for servicing. Failure to stabilize the rack
can cause the rack to tip over. Statement 1048
• Mechanical lift capable of lifting the full weight of the chassis and its installed modules
If the rack is on wheels, ensure that the brakes are engaged or that the rack is
otherwise stabilized. If connecting a Cisco MDS 9700 Series switch to a 110-VAC
power system, ensure that sufficient power is provided to meet the chassis power
requirements for the number of modules installed.
All power supplies must be grounded. The receptacles of the AC power cables
used to provide power to the chassis must be the grounding type, and the grounding
conductors should connect to protective earth ground at the service equipment.
For a Cisco MDS 9700 Series switch with a DC power supply, a grounding cable
must be connected to the terminal block.
When connected to 220 VAC, the 3000-W AC power supplies DS-CAC97-3KW for the Cisco MDS
9700 Series switch are designed to provide an output power of 3000 W to power the modules and
fans. When connected to a 110 VAC power system, the power supply provides approximately 1450
W. In this case, and if the power supplies are used in redundant rather than combined mode, they
might not provide adequate power, depending on the number of modules loaded in the chassis.
If a 110-VAC input is chosen, a 110-VAC power cord (CAB-7513AC=) must be ordered separately.
When installing or replacing the unit, the ground connection must always be made
first and disconnected last. Statement 1046
Cisco MDS 9700 Series Switches Hardware Installation Guide
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