
WWN Cards
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WWN card overview
Two WWN cards are located behind the WWN bezel (logo plate) between the power supplies on the nonport side of the device. WWN 1
is located on the left side and WWN is located on the right side. The WWN cards store critical configuration data, such as WWN, IP
addresses, part and serial numbers, and license IDs for the device.
Identical data must be maintained on each WWN card at all times so that if one card fails, the system can use the other card to provide
valid system operation. To maintain data and ensure its integrity, the system audits both WWN cards one hour after the first system boot-
up, every 24 hours after boot-up, and any time a WWN card is inserted to compare the critical data.
If a data mismatch is detected during the audit, messages in the RASlog will provide a summary of all errors detected and prompt you
through a data recovery process. The
wwnrecover
utility permits a recovery of WWN card data in the event of corruption. The data
recovery mechanism may vary depending on the error encountered and the data being compared. Problems such as a mismatch
between license IDs cannot be fixed with
wwnrecover
, and the output will direct you to call Brocade Technical Support. For other
problems, running
wwnrecover
can pinpoint the problem and, in some cases, permit you to fix it. Mismatched data can be resolved, and
corrupt data can sometimes be recovered. For more information on the
wwnrecover
utility, refer to
171.
NOTE
The device will operate with one WWN card, but will be in degraded condition. If you have removed a card, be sure to replace as
soon as possible.
WWN card location and numbering
WWN card are located behind the WWN bezel (logo bezel) on the nonport side of the device between the power supplies. The bezel
must be removed to access the card trays. The following figure illustrates WWN card location and numbering.
Brocade X6-4 Director Hardware Installation Guide
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