Rear Panel Components - Silicon Graphics SGI Altix 3700 Bx2 User Manual

Rear Panel Components

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The R-brick has the following rear panel items (see Figure 8-3):
• Power switch. Move the power switch to the I position to power on the
L1 controller within the R-brick, and to the 0 position to power off the L1 controller.
Powering on the L1 controller Illuminates the 12-VDC LED green.
• PWR (power) connector. This connects the R-brick to the power bay, to provide
12-VDC and 48-VDC power to the R-brick.
• 48-VDC and 12-VDC LEDs. The power switch must be in the ON (I) position for
these LEDs to be on. The 12-VDC LED illuminates green when the L1 controller is
powered on and operating, and the 48-VDC LED illuminates green when the rest of
the R-brick internal components are powered on and operating. You power on the
internal components by pressing the On/Off switch on the L1 controller panel.
• Links R TO R connectors (1, 6, 7, and 8, or A, F, G, and H). These link connectors
connect the R-brick to other R-bricks in the network fabric.
• Links R to R and CR to R connectors (2, 3, 4, and 5 or B, C, D, and E). These link
connectors normally connect the R-brick to CR-bricks; however, in larger systems
they are also used to connect R-bricks to R-bricks.
• L1 port connector. This connects the internal USB hub of the R-brick to an optional
console/controller. The internal USB hub can receive the USB signals from the
controller via this port and distribute these signals to the L1 of the R-brick.
• Link connector LEDs. Each NUMAlink connector has two LEDs, as follows:
– The yellow LED illuminates to indicate that both the R-brick and the brick to
which it is connected are powered on.
– The green LED illuminates when a link has been established between the
R-brick and the brick to which it is connected.
External Components
101