IBM Storwize V7000 Troubleshooting And Maintenance Manual page 122

v If you are replacing the enclosure because neither node canister can start, retrieve this information
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4 after you have completed the replacement.
4 a. Start the service assistant on one of the canisters.
b. Go to the node location data on the home page.
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c. Record the machine type and model, the serial number, WWNN 1 and WWNN 2 from the
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4 node copy column.
4 The machine type and model and the serial number are also shown on the labels at the front
and back of the enclosure.
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2. If the enclosure is still active, shut down the host I/O and the Metro Mirror and Global Mirror
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4 activity to the enclosure.
4 3. If the cluster is still online, shut it down.
a. From the management GUI, go to the Home → Manage Device page.
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b. Select Shut Down Cluster from the Actions menu.
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c. Wait for the shutdown to complete.
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4 4. Verify that it is safe to remove the power from the enclosure.
4 For each of the canisters, verify the status of the cluster status LED. If the LED is lit on either of the
canisters, do not continue because the cluster is still online. Determine why the cluster did not shut
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down in step 3.
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Note: If you continue while the cluster is still active, you risk losing the cluster configuration and
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4 volume cache data that is stored in the canister.
4 5. Turn off the power to the enclosure using the switches on the power supply units.
4 6. Record which data cables are plugged into the specific ports. The cables must be inserted back into
the same ports after the replacement is complete; otherwise, the system cannot function properly.
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7. Disconnect the cable retention brackets and the power cords from the power supply units.
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4 8. Disconnect the data cables for each canister.
4 9. Remove the power supply units from the enclosure.
10. Remove the canisters from the enclosure. Record the location of each canister. They must be inserted
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back into the same location in the new enclosure.
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11. Remove all the drives and blank drive assemblies from the enclosure. Record the location for each
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4 drive. They must be inserted back into the same location in the new enclosure.
12. Remove both enclosure end caps from the enclosure. Keep the left end cap because it is used again.
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13. Remove the clamping screws that attached the enclosure to the rack cabinet.
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14. Remove the enclosure chassis from the front of the rack cabinet and take the chassis to a work area.
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4 15. Install the new enclosure chassis in the rack cabinet.
4 16. Remove the end caps from the new enclosure and install the clamping screws that attach the
enclosure to the rack cabinet.
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17. Replace the end caps. Use the new right end cap and use the left end cap that you removed in step
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4 12.
4 Using the left end cap that you removed preserves the model and serial number identification.
18. Reinstall the drives in the new enclosure. The drives must be inserted back into the same location
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from which they were removed on the old enclosure.
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4 19. Reinstall the canisters in the enclosure. The canisters must be inserted back into the same location
4 from which they were removed on the old enclosure.
20. Install the power supply units.
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21. Reattach the data cables to each canister using the information that you recorded previously.
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Note: The cables must be inserted back into the same ports from which they were removed on the
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old enclosure; otherwise, the system cannot function properly.
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Storwize V7000 Version 6.1.0: Troubleshooting, Recovery, and Maintenance Guide