IBM SAN256B-6, Installation, Service And User Manual

Page: 179 / 292

v RASlog messages may occur during periodic WWN card audit routines alerting you of data or license
mismatches between WWN cards and other errors. Some of these messages may direct you to contact
technical support or to run the
wwnrecover command. You can use this command to further verify or to
fix problems. If an EM-1220 or EM-1222 error message occurs due to WWN card data corruption or
data mis-matches across WWN cards, data recovery may be possible using this command. For more
information on using
wwnrecover , refer to “Using the wwnrecover utility” on page 152. If recovery is
not possible, command output will direct you to replace the affected card(s).
v Status LEDs on the WWN bezel do not reflect the actual status of the WWN cards or indicate a
problem. For information on interpreting LED patterns, refer to “Interpreting WWN card LEDs” on
page 92. Note that the LED patterns may temporarily change during POST and other diagnostic tests.
v Problems viewing or modifying the data stored on the WWN card.
v Error messages regarding WWN units in chassisshow output.
Error messages that may indicate problems with a WWN card are summarized in the following table.
Table 28. Messages that may indicate WWN card failure
Type of message Sample error message
WWN unit fails its field-replaceable unit (FRU) header
access.
0x24c (fabos): Switch: switchname, error
EM-I2C_TIMEOUT, 2, WWN 1 I2C
timed out: state 0x4
WWN unit fails to power on.
<timestamp>, [EM-1004],
<sequence-number>, CRITICAL,
<system-name>, WWN # failed to power
onor<timestamp>, [EM-1043],
<sequence-number>, WARNING,
<system-name>, Can’t power <FRU Id>
<state (on or off)>.
WWN unit is being faulted. 0x24c (fabos): Switch: switchname
, Critical EM-WWN_UNKNOWN, 1, Unknown
WWN #2 is being faultedor<timestamp>,
[EM-1003], 40, SLOT 7 | FFDC | CHASSIS,
CRITICAL, Brocade_Chassis, WWN 2 has unknown
hardware identifier: FRU faultedor<timestamp>,
[EM-1034], <sequence-number>, ERROR,
<system-name>, WWN # set to faulty,
rc=<return code>
WWN unit is not present or is not accessible. 0x24c (fabos): Switch:
switchname, Error EM-WWN_ABSENT, 2,
WWN #1 not presentor<timestamp>,
[EM-1036], <sequence-number>, WARNING,
<system-name>, <FRU Id> is not
accessible.
Writing to the FRU history log (hilSetFruHistory) has
failed.
0x24c (fabos): Switch:
switchname, Error EM-HIL_FAIL, 2,
HIL Error: hilSetFruHistory failed,
rc=-3 for SLOT 3
WWN card replacement task guide
This section contains a guide to more complete, detailed steps in this section for installing or replacing
WWN careds when the device is running (hot swap) or must be powered off (cold swap). References are
provided to the more detailed WWN removal and installation steps for further information.
WWN Cards
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