Cisco MDS 9396V Installing page 10

Preinstallation Guidelines
• Ensure that the cabinet or rack meets the requirements listed in the
section.
Note
If the front cabinet mounting rails are not offset from the front door or bezel panel
by a minimum of 3 inch (7.6 cm), and a minimum of 5 inch. (12.7 cm),
respectively, and cable management brackets are installed on the front of the
chassis, the chassis should be mounted rear-facing to ensure the minimum bend
radius for fiber-optic cables.
Note Jumper power cords are available for use in a cabinet.
• Ensure the chassis is adequately grounded. If the switch is not mounted in a grounded rack, we recommend
connecting both the system ground on the chassis and the power supply ground to an earth ground.
• Ensure the site power meets the power requirements listed in the Technical Specifications section. If
available, you can use an uninterrupted power supply (UPS) to protect against power failures.
Caution Avoid UPS types that use ferro-resonant technology. These UPS types can become
unstable with systems such as the Cisco MDS 9000 Family, which can have
substantial current draw fluctuations because of fluctuating data traffic patterns.
• Ensure that electrical circuits are sized according to local and national codes.
For North America, the 300 W power supplies require a 20 A circuit. If you are using a 200 or 240 VAC
power source in North America, the circuit must be protected by a two-pole circuit breaker.
Caution
To prevent loss of input power, ensure the total maximum loads on the circuits
supplying power to the switch are within the electrical current ratings for circuit
wiring and breakers.
• Use the following screw torques when installing the switch:
• Captive screws: 4 in-lb (0.45 N·m)
• M3 screws: 4 in-lb (0.45 N·m)
• M4 screws: 12 in-lb (1.36 N·m)
• M6 screws: 40 in-lb (4.5 N·m)
• 10-32 screws: 20 in-lb (2.26 N·m)
• 12-24 screws: 30 in-lb (3.39 N·m)
Installing the Cisco MDS 9396V Switch
10
Installing the Cisco MDS 9396V Switch
Cabinet and Rack Requirements