Verifying The Need For Replacement - Brocade Communications Systems DCX-4S Backbone Hardware Installation Manual

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 11
Error message
[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.
[EM-1221], ... M1, INFO, ... A WWN card has been
inserted, a WWN verification audit will be run to detect
any mismatches or other problems.
[HIL-1650], CHASSIS, ERROR...Unable to detect WWN
card in chassis. Access to WWN halted...
[EM-1222], ... M1, WARNING, ... A WWN card access
problem has been encountered, please run the
wwnrecover tool to get more information and recovery
options.
Recovery is not possible. Please contact Brocade
Technical Support for replacement of the corrupted or
inaccessible WWN(s).
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 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
Brocade DCX-4S Backbone Hardware Installation Guide
53-1001191-15
RASlog messages from WWN card audit
Using wwnrecover
Verifying the need for replacement
Issue
Some kind of error or mismatch has been detected in
the WWN card audit.
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.
WWN card has been removed from the chassis.
Replace as soon as possible since system is in
degraded state.
An error is detected during normal access to the WWN
cards; typically, one of the cards is corrupted or
inaccessible.
The license ID on the two WWN cards do not match.
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