System board switches
Some server operations, including adding or removing a component or changing a security feature, require that you reconfigure a system switch. If the system configuration is incorrect, the server might not work properly and you might receive error messages on the screen. Setting and checking the system board switches is an important part of the overall troubleshooting process.
The server has three switch banks:
•System maintenance switch (SW3)
•System ID switch (SW4)
•iLO/Redundant ROM override switch (SW5)
This section provides figures and tables to identify the locations, positions, functions, and settings for each of these switches.
System maintenance switch (SW3)
Figure 63 System maintenance switch (SW3)
Table 23 | System maintenance switch (SW3) |
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Position | Default | Function | Description | Settings |
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1 | — | Reserved | — | — |
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2 | Off | Lock configuration | Enables or disables | Open (off) |
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| configuration changes | Configuration can be |
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| NVRAM. | changed. |
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| Closed (on) |
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| Configuration is locked |
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| and cannot be |
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| changed. |
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3 | — | Reserved | — | — |
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4 | Off | Diskette boot override | Enables or disables | Open (off) |
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| booting from diskette | The diskette drive boot |
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| drive. | is controlled by the |
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| Both settings enable | configuration. |
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| you to read from and | Closed (on) |
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| write to the diskette | The diskette drive boots |
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| after the system | regardless of the |
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| completes the boot | configuration. |
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| sequence. |
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Server component identification 69
