System Configuration Card (Scc) - Sun Microsystems Netra 440 Service Manual

System Configuration Card (SCC)

The system configuration card stores system configuration variables and MAC
addresses. For more information on the system configuration card, refer to the Netra
440 Server Product Overview (817-3881-xx).
You can replace a functioning system configuration card and install it into another
system. thereby preserving the system's host ID information. Thus, migrating a
system configuration card from one system to another can smooth transitions to new
or upgraded systems, or quickly bring up a backup system if a primary system
becomes unavailable, without disrupting the system's identity on the network. Note
that you can only migrate a system configuration card from one Netra 440 server to
another Netra 440 server.
If you are replacing a defective system configuration card, you must contact a Sun
service representative to obtain a new card with the existing server's host ID and
MAC address. Do not reuse an old system configuration card if you have replaced it
with a new one with the same host ID and MAC address.
Caution – Do not handle the system configuration card unless you need to transfer
it to another system. If you need to handle the card for this reason, avoid contact
with the gold terminals on the underside of the card.
Caution – Never remove the system configuration card while the server is booting
or running the Solaris OS. Either disconnect power from the server, or put the server
into standby mode, before removing or inserting the SCC. If the SCC is removed
while the system is running, the system will shut down if the SCC is not replaced
within 60 seconds.
Keep the following points in mind when removing or installing the system
configuration card:
The system attempts to access the system configuration card while booting.
■
The system will not power on without a properly formatted system configuration
■
card present in the reader.
If the content of the nvram section is invalid, the system is initialized with its
■
default nvram configuration.
If the content of the idprom section is invalid, OpenBoot firmware displays a
■
warning message and the system does not auto-boot the Solaris OS. However,
you can boot the system from the ok prompt using the boot command.
Chapter 4 Removing and Replacing Cold-Swappable Components 57