Cisco MDS 9216 Hardware Installation Manual page 53

Chapter 2 Installing the Cisco MDS 9216 Switch
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Avoid UPS types that use ferroresonant technology. These UPS types can become
Caution
unstable with systems like the Cisco MDS 9000 Family, which can have
substantial current draw fluctuations because of fluctuating data traffic patterns.
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To prevent loss of input power, ensure the total maximum loads on the circuits
Caution
supplying power to the switch are within the current ratings for the wiring and
breakers.
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78-16165-01
Consider heat dissipation when sizing the air-conditioning requirements
(environmental and heat dissipation requirements are listed in
"Technical Specifications").
Ensure the site power meets the power requirements listed in
"Technical Specifications". If available, you can use an uninterruptible
power supply (UPS) to protect against power failures.
Ensure that circuits are sized according to local and national codes. For North
America, the 845 Watt power supply requires a 15A or 20A circuit.
If you are using a 200/240 VAC power source in North America, the circuit
must be protected by a two-pole circuit breaker.
If mounting the chassis in a rack or cabinet, ensure the rack or cabinet meets
the following requirements:
Standard 19" EIA rack or cabinet, with mounting rails that conform to
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English universal hole spacing per section 1 of ANSI/EIA-310-D-1992.
Width between two front mounting rails: minimum of 17.75 inches
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(45.1 cm)
Depth between front and rear mounting rails: minimum of 23.5 inches
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(59.7 cm)
Minimum vertical rack space per chassis: 3 rack units (RU), equal to
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5.25 inches (13.3 cm)
Cisco MDS 9216 Switch Hardware Installation Guide
Pre-Installation
Appendix B,
Appendix B,
2-3