Jumper power cords are available for use in a cabinet.
Note
• 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.
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.
Caution
• 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.
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.
Caution
• 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 Switch
This section describes how to use the rack-mount kit to install the Cisco MDS 9396T switch into a cabinet or
rack that meets the requirements described in the
Cabinet and Rack Requirements, on page 17
section.
Attaching the Bottom-Support Rails on the Rack
The switch chassis that you are installing ships with two adjustable bottom-support rails that you can attach
to a four-post rack to hold the chassis. Each of these bottom-support rails has two pieces—one that slides into
the other so that you can adjust them to fit racks with front and rear mounting posts that are spaced less than
36 inches (91 cm). On each bottom-support rail, the rail half that slides into the other rail includes a chassis
Cisco MDS 9396T Multilayer Fabric Switch Hardware Installation Guide
30
Installing the Cisco MDS 9396T Switch
Installing the Switch
