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4: System Configurations
Power
The standard power component of an Origin 300 with NUMAlink module system is a
power distribution unit (PDU). A second PDU or a power strip might also exist in the
rack. The power strip exists when the system requires 11 to 15 power receptacles. The
second PDU exists when the system requires more than 15 power receptacles.
The PDU inputs AC voltage from an external power receptacle and outputs AC voltage
to the Origin 300 base modules, AC-powered NUMAlink module, TP900 storage
modules, power adapter of the USB hub, power bay module, Myrinet-2000 switch,
L2 controller power supply, and power strip.
Note:
In a system that contains an AC-powered NUMAlink module, the L2 controller
receives power from a power supply. This power supply receives AC voltage from a PDU
or power strip and converts the voltage to 48 Vdc, which is the input voltage that the L2
controller requires. In a system that contains a DC-powered NUMAlink module, the L2
controller receives the 48 Vdc from a power bay.
In addition to the PDUs and power strip, a system that has a DC-powered NUMAlink or
PCI expansion module contains one power bay module. The power bay module, which
resides in U1 of the short and tall racks, converts AC voltage to 48 Vdc and 12 Vdc
standby voltage and outputs this voltage to the NUMAlink module, the PCI expansion
modules, and the L2 controller. The power bay contains two power supplies, which
reside in locations 5 and 6 of the power bay.
Note:
When a system that contains a DC-powered NUMAlink module has four PCI
expansion modules, the power bay contains three power supplies. The third power
supply resides in location 4 of the power bay.
Note:
An AC-powered NUMAlink module system requires a power bay only when it
contains a PCI expansion module.
Figure 4-6 illustrates the power configuration of an Origin 300 system that contains an
AC-powered NUMAlink module. Figure 4-7 illustrates the power configuration of a
system that contains a DC-powered NUMAlink module.
Содержание Origin 300
Страница 1: ...SGI Origin 300 System with NUMAlink Module User s Guide 007 4498 002 ...
Страница 4: ......
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Страница 35: ...Base System Components 007 4498 002 9 Figure 1 7 Front and Rear Views of an SGI Origin 300 Base Module ...
Страница 39: ...Base System Components 007 4498 002 13 Figure 1 10 L2 Controller ...
Страница 49: ...Optional System Components 007 4498 002 23 Figure 1 17 SGI TP9400 Storage System ...
Страница 54: ...28 007 4498 002 1 Introduction Figure 1 18 Tape Drive Libraries L20 L40 L80 L180 L700 ...
Страница 71: ...Installing Your System 007 4498 002 45 Figure 2 5 Removing a Short Rack from the Shipping Crate Peg ...
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Страница 93: ...Disk Drives 007 4498 002 67 Figure 3 11 Installing a Disk Drive c Bezel door Disk drive Bezel door a b d ...
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