IBM SAN256B-6, Installation, Service And User Manual

Page: 183 / 292

Procedure
1.
Remove the defective WWN card assembly using procedures under “Removing the WWN card and
bezel” on page 157. Removing a WWN card assembly will result in RASlog messages indicating that
a WWN card cannot be detected. Since the system will be in a degraded state, replace the WWN
card as soon as possible.
2. Install the replacement WWN card assembly into the empty slot using the following steps:
a. Holding the card assembly by its edges with both hands along its length, slide it into the chassis
slot.
b. Push with your thumb on the end of assembly to fully seat into the backplane connector.
c. Use a Phillips screwdriver to tighten the captive screw and secure the card assembly to the
chassis.
Note: Be sure that captive screws are tightened. If not, high pressure from fan operation may
unseat cards from chassis connectors.
3.
Verify that the WWN card is correctly connected by noting if the LEDs on the card reflects the status
of the components.
4. Address any issues flagged by any RASlog EM-1220 and EM-1222 messages that display for the new
card before proceeding.
Note: Issues relating to data recovery on new WWN cards must be resolved at this point before
proceeding to avoid invalid WWN data, errors, and operating problems. If EM-1220 messages
indicate that IP addresses on installed WWN cards do not match, follow instructions in the message
to recover the IP address so that both cards use the same address.
5. Determine the active CP blade by entering the haShow command.
6.
On the active CP blade, run the
wwnrecover
command and specify the WWN card that you replaced
(WWN 2 or WWN 1) when prompted.
7. If wwnrecover messages prompt for a system reboot, reboot both CP blades to ensure the system is
running with valid WWN card data.
8. Enter the
hafailover
command to force failover so that the standby CP blade becomes the active CP
blade. This command is necessary so that the correct IP address for the new card displays for the
ipaddrshow
command. For more information on these commands, refer to the Fabric OS Command
Reference.
9. Verify the new card settings by running the following commands and comparing the output with the
original
supportsave data:
v licenseidshow
v ipaddrshow
v switchname
v
chassisname
v wwncardshow ipdata
v
chassisshow
(look at the WWN and Chassis information at the bottom)
10. If replacing the second WWN card, repeat the previous steps in this procedure for the other card.
11. Install the WWN bezel on the chassis.
a. Orient the bezel on the chassis.
b. Insert and tighten both screws using a Phillips screwdriver.
12. Pack faulty WWN cards in the packaging provided with the replacement cards, and return them to
Support for failure analysis (FA).
WWN Cards
155