NonStop NS1000 Planning Guide (H06.06+)

Installation Facility Guidelines
HP Integrity NonStop NS1000 Planning Guide—542527-002
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Grounding Systems
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Electrical storms
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Large inductive sources (such as motors and welders)
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Faults in the distribution system wiring (such as loose connections)
Computer systems can be protected from the sources of many of these electrical
disturbances by using:
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A dedicated power distribution system
•
Power conditioning equipment
•
Lightning arresters on power cables to protect equipment against electrical storms
For steps to take to ensure proper power for the servers, consult with your HP site
preparation specialist or power engineer.
Grounding Systems
The site building must provide a power distribution safety ground/protective earth for
each AC service entrance to all NonStop server equipment. This safety grounding
system must comply with local codes and any other applicable regulations for the
installation locale.
For proper grounding/protective earth connection, consult with your HP site preparation
specialist or power engineer.
Power Consumption
In an Integrity NonStop NS1000 system, the power consumption and inrush currents
per connection can vary because of the unique combination of enclosures housed in
the modular cabinet. Thus, the total power consumption for the hardware installed in
the cabinet should be calculated as described in Enclosure Power Loads on page 3-4.
Power Cables for European Union
If your site is in one of the European Union (EU) countries or in an area that complies
with EU regulations, you can order modular cabinets with PDU power cables
specifically manufactured and color coded for use in the EU. These are often called
harmonized cables and comply with color coding and materials standards different
from those used in North America and Japan.
Uninterruptible Power Supply (UPS)
Modular cabinets do not have built-in batteries to provide power during power failures.
Integrity NonStop NS1000 servers require either the optional HP model R5500 XR
UPS installed in each modular cabinet or a site UPS to support system operation
through a power failure. This system operation support can include a planned orderly
shutdown at a predetermined time in the event of an extended power failure. A timely
and orderly shutdown prevents an uncontrolled and asymmetric shutdown of the
system resources from depleted UPS batteries.