NonStop NS14000 Series Planning Guide (H06.13+)

3 System Installation Specifications
All specifications provided in this chapter assume that each enclosure in the modular cabinet is
fully populated; for example, a NonStop Blade Element with four processors and maximum memory.
The maximum current for each AC service depends on the number and type of enclosures installed
in the modular cabinet. Power, weight, and heat loads are less when enclosures are not fully
populated; for example, a NonStop Blade Element with fewer processors or a Fibre Channel disk
module with fewer disks.
Modular Cabinets
The modular cabinet is a EIA standard 19-inch, 42U, rack for mounting modular components. The
modular cabinet comes equipped with front and rear doors and includes a rear extension that
makes it deeper than some industry-standard racks. The Power Distribution Units (PDUs) are mounted
along the rear extension without occupying any U-space in the cabinet and are oriented inward,
facing the components within the modular cabinet.
NOTE: For instructions on grounding the modular cabinet's G2 rack using the HP Rack Grounding
Kit (AF074A), ask your service provider to refer to the instructions in the HP 10000 G2 Series
Rack Options Installation Guide. This manual is available at: http://bizsupport1.austin.hp.com/
bc/docs/support/SupportManual/c01493702/c01493702.pdf.
Depending on your NS14000 power configuration, your system uses one of these PDU types:
• “Monitored Single-Phase PDUs”
• “Monitored Three-Phase PDUs” (page 46)
• “Modular Three-Phase PDUs” (page 51)
NOTE: If your system includes the optional rackmounted HP R5000 UPS or HP R5500 XR UPS,
the modular cabinet will have one PDU located on the rear left side and four extension bars on
the rear right side. To provide redundancy, components are plugged into the left-side PDU and the
extension bars. Each extension bar is plugged into the UPS.
Each PDU is wired to distribute the load segments to its receptacles.
CAUTION: If you are installing NonStop NS14000 series enclosures in a modular cabinet,
balance the current load among the available load segments. Using only one of the available load
segments, especially for larger systems, can cause unbalanced loading and might violate applicable
electrical codes. Connecting the two power plugs from an enclosure to the same load segment
causes failure of the hardware if that load segment fails.
Monitored Single-Phase PDUs
Two monitored single-phase power distribution units (PDUs) are installed to provide redundant
power outlets for the components mounted in the modular cabinet. The PDUs are oriented inward,
facing the components within the modular cabinet. Each PDU is 60 inches long and has 39 AC
receptacles, three circuit breakers, and an AC power cord. The PDU is oriented with the AC power
cord exiting the modular cabinet at either the top or bottom rear corners of the cabinet, depending
on the sites power feed needs.
For information about specific characteristics for PDUs factory-installed in monitored single-phase
cabinets, refer to
• “AC Power Feeds, Monitored Single-Phase PDUs” (page 42)
• “Input and Output Power Characteristics, Monitored Single-Phase PDUs” (page 45)
• “Branch Circuits and Circuit Breakers, Monitored Single-Phase PDUs” (page 46)
Modular Cabinets 41