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3 System Installation Specifications
This section provides specifications necessary for system installation planning.
NOTE: All specifications provided in this section assume that each enclosure in the modular
cabinet is fully populated. 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 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)”
(page 42) are mounted along the rear extension without occupying any U-space in the cabinet
and are oriented inward, facing the components within the rack.
NonStop BladeSystem Power Distribution
There are two power configurations for NonStop BladeSystems:
• North America/Japan (NA/JPN): requires 208V three phase (120V phase to neutral) and
loads wired phase-to-phase
• International (INTL): requires 400V three phase with loads wired phase to neutral (230V)
Both power configurations require 200V to 240V distribution and careful attention to phase load
balancing. For more information, see “Phase Load Balancing” (page 45).
The NonStop BladeSystem's three-phase, c7000 enclosure contains an AC Input Module that
provides 2N redundant power distribution for the power configurations. This power module
comes with a pair of power cords that provide direct AC power feeds to the c7000 enclosure:
Modular Cabinets 37