Sun Microsystems Netra 240, Service Manual

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125
A P P E N D I X
C
System Configuration Card and
OpenBoot Configuration
Parameters
This appendix provides information on the system configuration card (SCC) and the
OpenBoot PROM configuration parameters stored on it. For more on the SCC, see
“System Configuration Card” on page 38 .
The system configuration card is housed in a slot behind the front bezel, next to the
On/Standby button (see
FIGURE C-1
). The card contains unique network identity
information, including the MAC address and hostid (stored in the IDPROM), and
the OpenBoot PROM configuration (also known as NVRAM).
FIGURE C-1
Location of the System Configuration Card
The server attempts to access the system configuration card while booting.
■
If a properly formatted card is not present in the reader, the system does not boot.
■
If the content of the NVRAM section is invalid, the system is initialized with its
default NVRAM configuration. The default values can be seen using the
printenv
command.
System configuration card