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External Components
007-4377-002
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Power Supply Module
The SGI TP900 storage system requires one 350-W power supply module, which is
mounted in the rear of the system (location 2/3). Power supply voltage operating ranges
are nominally 115 V or 230 V and are selected automatically.
Optionally, a second power supply module (location 2/1) can be added to the TP900
system to provide n+1 redundant power. In this n+1 redundant configuration, the power
supply modules operate together; if one power supply module fails, the other module
supplies power until the faulty unit is replaced.
The power supply module contains two LEDs that are located on the front panel of the
power supply. The green LED indicates power output. The amber LED indicates a power
supply failure.
Input/Output (I/O) Module
The I/O module contains two VHDCI connectors and a switch to set the SCSI ID range.
The SGI TP900 storage module supports one I/O module for a 1 x 8 configuration and 2
I/O modules for a 2 x 4 configuration. The 1 x 8 configuration creates a SCSI bus structure
with 1 string of 8 drives. The 2 x 4 configuration creates a SCSI bus structure with 2
strings of 4 drives.
Note:
When only one I/O module is present in the system, the other I/O module
location contains a loopback module that has no external connectors.
Loopback module
The backplane of the TP900 consists of two 4-drive channels. A loopback module is used
to connect the two internal drive channels together when the TP900 is configured as one
channel with 8 drives.
Summary of Contents for SGI Altix 3700 Bx2
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