IBM Storwize V7000 Unified Series Problem Determination Manual page 257

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22. Install the power supply units.
23. Reattach the data cables to each canister using the information that you
recorded previously.
Note: The cables must be inserted back into the same ports from which they
were removed on the old enclosure; otherwise, the system cannot function
properly.
24. Attach the power cords and the cable retention brackets to the power supply
units.
25. Write the old enclosure machine type and model (MTM) and serial number on
the repair identification (RID) tag that is supplied. Attach the tag to the left
flange at the back of the enclosure.
26. Turn on the power to the enclosure using the switches on the power supply
units.
The node canisters boot up. The fault LEDs are on because the new enclosure
has not been set with the identity of the old enclosure. The node canisters
report that they are in the wrong location.
a. Connect to the service assistant on one of the node canisters to configure
the machine type and model, serial number, and WWNNs that are stored
in the enclosure. If you have replaced a node canister, connect to the
canister that has not been replaced.
You can connect using the previous service address. However, it is not
always possible to maintain this address. If you cannot connect through
the original service address, attempt to connect using the default service
address. If you still cannot access the system, see "Problem: Cannot
connect to the service assistant" on page 193.
b. Use the Configure enclosure panel.
c. Select the options to Update WWNN 1, Update WWNN 2, Update the
machine type and model, and Update the serial number. Do not update
the system ID. Use the node copy data for each of the values. Check that
these values match the values that you recorded in step 1 on page 231.
If you were not able to record the values, use the node copy values only if
none of them have all zeroes as their value. If any of the node copy values
are all zeroes, connect the service assistant to the other node canister and
configure the enclosure there. If you still do not have a full set of values,
contact IBM support.
After you modify the configuration, the node attempts to restart.
Note: There are situations where the canisters restart and report critical
node error 508. If the node canisters fail to become active after they restart
when the enclosure is updated, check their status by using the service
assistant. If both node canisters show critical node error 508, use the
service assistant to restart the nodes. For any other node error, see
"Procedure: Fixing node errors" on page 204. To restart a node from the
service assistant, perform the following steps:
1) Log on to the service assistant.
2) From the home page, select the node that you want to restart from the
Changed Node List.
3) Select Actions > Restart.
d. The system starts and can handle I/O requests from the host systems.
Chapter 5. Control enclosure
233