Compaq ProLiant 8000 ProLiant 8000 Servers Maintenance and Service Guide - Page 108

Switches, Processor Board Bus/Core Frequency Ratio Switch Settings

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Connectors, Switches, and Status Indicators 4-5 Switches This section contains information on processor board bus/core frequency ratio switch settings and internal/external battery switch settings for ProLiant 8000 servers. Processor Board Bus/Core Frequency Ratio Switch Settings Processor board bus/core frequency ratio switches can be set either by the system BIOS or manually. Figure 4-4 shows the location of the processor board bus/core frequency ratio switches. Table 4-4 shows the bus/core frequency ratio switch settings. CAUTION: Setting the processor switchbanks incorrectly can result in permanent damage to the processor or in data loss. IMPORTANT: The bus/core switches come set at the Off position. This allows the ROM to automatically set the optimal speed for the buses. The server will not start if the switches are set to a speed higher than the slowest processor. on 1234 on 1234 Figure 4-4. Processor board switch bank Table 4-4 Processor Board Bus/Core Frequency Ratio Switch Settings Bus/Core Frequency ROM 400 MHz 450 MHz 500 MHz 550 MHz Ratio Auto 4 4.5 5 5.5 SW 1 OFF ON OFF ON OFF SW 2 OFF ON ON OFF OFF SW 3 OFF OFF OFF OFF OFF SW 4 OFF ON ON ON ON

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Connectors, Switches, and Status Indicators
4-5
Switches
This section contains information on processor board bus/core frequency ratio switch settings
and internal/external battery switch settings for ProLiant 8000 servers.
Processor Board Bus/Core Frequency Ratio Switch Settings
Processor board bus/core frequency ratio switches can be set either by the system BIOS or
manually. Figure 4-4 shows the location of the processor board bus/core frequency ratio
switches. Table 4-4 shows the bus/core frequency ratio switch settings.
CAUTION:
Setting the processor switchbanks incorrectly can result in permanent damage to
the processor or in data loss.
IMPORTANT:
The bus/core switches come set at the Off position. This allows the ROM to automatically
set the optimal speed for the buses. The server will not start if the switches are set to a speed higher
than the slowest processor.
1
on
2
3
4
1
on
2
3
4
Figure 4-4.
Processor board switch bank
Table 4-4
Processor Board Bus/Core Frequency Ratio Switch Settings
Bus/Core Frequency
Ratio
SW 1
SW 2
SW 3
SW 4
ROM
Auto
OFF
OFF
OFF
OFF
400 MHz
4
ON
ON
OFF
ON
450 MHz
4.5
OFF
ON
OFF
ON
500 MHz
5
ON
OFF
OFF
ON
550 MHz
5.5
OFF
OFF
OFF
ON