Dual Power Installation - Redundant Distribution Panel: This configuration requires that the system
receives power from two separate power distribution panels. The two distribution panels receive power
from the same piece of building switch gear. Most facilities should be able to achieve this level of
redundancy.
System
Switch Gear
Distribution
Panel
Distribution
Panel
Single Distribution Panel - Dual Circuit Breakers: This configuration requires that the system receives
power from two separate circuit breakers in a single power panel. This configuration does not make full
use of the redundancy provided by the processor. It is, however, acceptable if a second power distribution
panel is not available.
System
Switch Gear
Distribution
Panel
Additional Installation Considerations
In the United States, installation must be made in accordance with Article 645 of the National Electric
Code (NEC). In Canada, installation must be in accordance with Article 12-020 of the Canadian Electrical
Code (CEC).
Signal Integrity: System reliability can be adversely affected by the presence of transient electrical noise
that may be conducted on power, signal, and control cables. To conduct high-frequency-electrical noise
away from the system, the ground path must be as short as possible. All systems are provided with a
short ground strap that is intended for use with stringer/stanchion-type raised floors (or other grounded
types). This ground strap is required if your servers are connected to a 9076 SP Switch2 clustered
environment, and it is recommended for all other configurations.
Chapter 2. Physical Characteristics of Systems 133
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