53-1002177-19 Hardware Installation Guide
Brocade DCX 8510-4 Backbone Hardware Installation Guide
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 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.
The following table lists RASlog messages that can occur during the WWN card audit routine.
Table 21: RASlog messages from WWN card audit
Error message Issue
[EM-1220]...M1, ERROR ... A problem was found on one or
both CID cards (x), please run the wwnrecover tool to get more
information and recovery options.
Some kind of error or mismatch has been detected in the WWN
card audit.
[EM-1221], ... M1, INFO, ... A WWN card has been inserted, a
WWN verification audit will be run to detect any mismatches or
other problems.
A second WWN card is enabled and the WWN card audit will
be run. If an error is detected during the audit, EM-1220 and
EM-1222 messages are generated.
[HIL-1650], CHASSIS, ERROR...Unable to detect WWN card in
chassis. Access to WWN halted...
WWN card has been removed from the chassis. Replace as soon
as possible since system is in degraded state.
[EM-1222], ... M1, WARNING, ... A WWN card access problem
has been encountered, please run the wwnrecover tool to get
more information and recovery options.
An error is detected during normal access to the WWN cards;
typically, one of the cards is corrupted or inaccessible.
Recovery is not possible. Please contact Brocade Technical
Support for replacement of the corrupted or inaccessible WWN(s).
The license ID on the two WWN cards do not match.
The wwnrecover utility must be used to maintain data integrity when replacing one or both WWN cards using instructions
in the WWN card removal and replacement section. To run wwnrecover, log in as admin and enter the following
command:
switch:admin# wwnrecover
For more information on wwnrecover and command syntax, refer to the Brocade Fabric OS Command Reference.
Verifying the need for replacement
Before replacing a WWN card, verify that the replacement is necessary. Any of the following events can indicate that the
card requires replacement:
•
Status LEDs on the WWN bezel not reflecting the actual status of the components.
•
Power or Status LEDs on WWN card (beneath logo plate) indicate a problem.
•
Problems viewing or modifying the data stored on the WWN card.
•
Error messages regarding WWN units #1 or #2 from the chassisshow output.
•
If an EM-1220 or EM-1222 error message occurs in the RASlog and WWN card recovery is not successful using
wwnrecover.
NOTE
In the event of an EM-1220 or EM-1222 error message due to WWN card data corruption or data mis-matches
across WWN cords, data recovery may be possible using the wwnrecover utility. For more information on using
this utility, refer to Using wwnrecover.
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