IBM SAN512B-6 Installation, Service And User Manual page 179

Procedure
1. Unpack the replacement WWN card assembly and save the packaging for the
faulty WWN card(s). The WWN card assemblies are labeled #1 for the left slot
and #2 for the right slot.
2. Perform the following steps.
a. Log in to the device and execute the switchcfgpersistentdisable
command on the main switch and other logical switches. The
switchcfgpersistentdisable command disables the switches, and ensures
they remain disabled after the power is cycled. This allows you to check
all the settings so that you can verify the settings before placing the device
back into production.
switch:admin> switchcfgpersistentdisable
Switch's persistent state set to 'disabled'
If there are other logical switches on your chassis, use the setcontext
command to connect to all the other switches and then run
switchcfgpersistentdisable on these switches as well.
3. Enter the sysShutdown command. When command output indicates that the
device has completed shut-down, remove power cords from all power supply
assemblies.
4. Remove defective WWN card assemblies using steps under "Removing the
WWN card and bezel" on page 156, and then continue with step 5.
Note: There are two WWN card assemblies located behind the WWN bezel.
As you are facing the bezel, WWN 1 is located on the left side, and WWN 2 is
on the right.
5. Install replacement WWN card assemblies 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 device slot.
b. Push with your thumb on the end of assembly to fully seat into the
backplane connector.
c. Use a #1 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.
6. Power on the device and wait for five minutes for the device to boot.
7. Verify that new WWN cards are correctly connected by checking LED
function. For details on LED operation, refer to "Interpreting WWN card
LEDs" on page 78.
Note: The LEDs may take up to two minutes after WWN card installation to
begin functioning.
8. Resolve any issues flagged by RASlog EM-1220 and EM-1222 messages that
display for the new card(s) 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.
9. Determine the active CP blade by entering the haShow command.
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Chapter 10. WWN Cards