MSC Features and Functions
113
MSC Features and Functions
The MSC has the following basic features and functions:
•
Issues a reset signal at power-on.
•
A front panel-mounted keyswitch provides a soft power-off to standby condition.
•
A front panel-mounted push-button system reset switch.
•
A front panel-mounted push-button non-maskable interrupt (NMI) switch.
•
Monitors ambient incoming air temperature into the system and adjusts fan speed
accordingly (two speeds). A soft power-off of the system results when ambient
temperature becomes too high for safe operation.
•
LED display of ambient over-temperature conditions.
•
NVRAM for storing configuration information (1024 x 8 bits).
•
Monitors fan rotation and automatically increases to high speed fan operation when
a fan fails. Signals an impending shutdown when a single critical fan fails, or two or
more non-critical fans fail.
•
LED display of high fan speed and possible fan tray failure (fan high-speed LED).
•
LED display of power supply operation. AC OK LED indicates AC voltage applied
to system. DC OK indicates all power supply DC voltages (+12 V, +5 V, +3.45 V),
and remote DC voltages (3.3 V, 2.4 V, 1.6 V) are present with no error conditions in
the system. The DC OK LED does not indicate regulation or accuracy of the DC
voltages present.
•
Provides a 100-Kbps bidirectional communication path between the MSC,
mid-plane, and Hub ASIC IO space on each Node board in the system. This
communication path allows the MSC to receive system status messages from all
Node boards in a system, and to provide status messages from the MSC and all
Node boards in a system. This communication path is referred to as the I2C
interface.
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Страница 1: ...SGI 2400 and 2800 Server Owner s Guide Document Number 007 4192 001 ...
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Страница 22: ...2 Chapter 1 Introducing the SGI 2400 and 2800 Server Systems Figure 1 1 SGI 2400 Rackmount Server System ...
Страница 23: ...System Features 3 Figure 1 2 SGI 2400 Multirack System Configuration Example ...
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Страница 48: ...28 Chapter 2 Chassis Tour Figure 2 7 Node Board Positioning in the Chassis Node 1 Node 4 Node 3 Node 2 ...
Страница 71: ...Rackmount Configurations 51 Figure 4 4 16P SGI 2400 Server Node boards Router boards Midplane R1 R2 R3 R4 ...
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Страница 81: ...Connecting Your Terminal 61 Figure 5 1 Connecting a Terminal Terminal Console port ...
Страница 87: ...Loading the CD ROM 67 Figure 5 4 Installing a CD ROM Into an SGI 2400 or 2800 Chassis Retainers Retainers ...
Страница 91: ...Initially Powering On the System 71 Figure 5 7 Turning On the PDU PDU off PDU on PDU power switch ...
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Страница 107: ...General Procedures 87 Figure 6 5 Turning Off the PDU PDU off PDU on PDU power switch ...
Страница 113: ...Specific Procedures 93 Figure 6 10 Removing the Drive Handle in open position Handle in closed position ...
Страница 117: ...Specific Procedures 97 Figure 6 12 Removing the System Controller and CD ROM ...
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