53-1004106-15 Installation Guide
Brocade
®
X6-4 Director Hardware Installation Guide
WWN Cards
The WWN cards store critical configuration data, such as WWN, IP addresses, part and serial numbers, and license IDs
for the device.
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 2 is located on the right side.
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 bootup, every 24 hours after bootup, 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 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, see
.
NOTE
The device will operate with one WWN card but will be in a degraded condition. If you have removed a card, be
sure to replace it as soon as possible.
WWN Card Location and Numbering
The WWN cards 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 the WWN card location and
numbering.
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