NonStop NS-Series Planning Guide (H06.04+)

Installation Facility Guidelines
HP Integrity NonStop NS-Series Planning Guide—529567-005
2-3
Grounding Systems
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
Due to the higher hardware concentration in Integrity NonStop NS-series systems, the
power consumption and inrush currents per connection are higher than in the earlier
NonStop S-series systems. Because each modular cabinet houses a unique
combination of enclosures, calculate the total power consumption for the hardware
installed in each cabinet as described in Enclosure Power Loads on page 3-4. Then
add together the total power consumption values for all the modular cabinets in the
system.
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 Integrity NonStop NS-series 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)
Unlike previous NonStop servers that used internal batteries for memory hold-up
through power failures, Integrity NonStop NS-series 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.
Extended runtime modules (ERMs) can be included with the R5500 XR UPS to extend
the power back-up time. For estimated back-up times, refer to Model R5500 XR
Integrated UPS on page 3-5. For further information on the R5500 XR UPS, contact
your HP representation or refer to the HP UPS R5500 XR Models User Guide; part
number 351642, available at:
http://h10032.www1.hp.com/ctg/Manual/c00065453.pdf