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Use dedicated AC breaker panels for all power circuits that supply power to the PDU.
•
When planning for power distribution requirements, balance the power load between
available AC supply branch circuits.
•
In the United States and Canada, ensure that the current load of the overall system AC
input does not exceed 80 percent of the branch circuit AC current rating.
PDU power cords for Oracle racks are 4 meters (13.12 feet) long, and 1 to 1.5 meters (3.3 to
4.9 feet) of the cord might be routed in the rack cabinet. The installation site AC power
receptacle must be within 2 meters (6.6 feet) of the rack.
Grounding Guidelines
Use the following guidelines for grounding the server:
•
The rack must use grounding type power cords. For example, Exadata Server X10M
uses three-wire, grounding-type power cords.
•
Always connect the grounding-type power cords to grounded power outlets.
•
Because different grounding methods are used, depending on location, verify the
grounding type. For the correct grounding method, refer to local electrical codes.
•
Ensure that a facility administrator or qualified electrical engineer verifies the grounding
method for the building and performs the grounding work.
Circuit Breaker and UPS Guidelines
To prevent failures:
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Ensure that the design of your power system provides adequate power to the server.
•
Use dedicated AC breaker panels for all power circuits that supply power to the server.
•
Ensure that electrical work and installations comply with applicable local, state, or
national electrical codes.
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Ensure that the electrical circuits are grounded to Earth.
•
Provide a stable power source, such as an uninterruptable power supply (UPS) to reduce
the possibility of component failures. If computer equipment is subjected to repeated
power interruptions and fluctuations, then it is susceptible to a higher rate of component
failure.
Environmental Requirements
The following table describes environmental specifications for Exadata Server X10M.
Caution:
Set conditions to the optimal temperature and humidity ranges to minimize the
chance of downtime due to component failure. Operating the servers for extended
periods at or near the operating range limits, or installing them in an environment
where they remain at or near nonoperating range limits could significantly increase
hardware component failure.
Appendix B
Environmental Requirements
B-3
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