Moving expansion enclosures

To move an expansion closure from one control enclosure to another, complete the following steps.

1. Delete any volumes that are no longer needed and that depend on the enclosure that you plan to remove.
2. Delete any remaining arrays that are formed from drives in the expansion enclosure.
   Any data in those arrays is automatically migrated to other managed disks in the pool if there is enough capacity.
3. Wait for data migration to complete.
4. Mark all the drives (including any configured as spare or candidate drives) in the enclosures to be removed as unused.
5. Unmanage and remove the expansion enclosure by using the management GUI. Select Monitoring > System. On the System - Overview page, select the directional arrow next to the enclosure that you are removing to open the Enclosure Details page. Select Enclosure Actions > Remove.
   Do not proceed until the enclosure removal process completes successfully.
6. On the I/O group that contains the expansion enclosure that you want to remove, enter the following command to put the I/O group into maintenance mode:

   chiogrp -maintenance yes iogroup_name_or_id

   For more information, see chiogrp.
7. If the expansion enclosure that you want to move is at the end of a SAS chain, complete the following steps to remove the enclosure from the SAS chain.
   1. Disconnect the SAS cable from port 1 of canister 1 and canister 2.
      The enclosure is now disconnected from the system.
   2. Disconnect the other ends of the SAS cables from the previous enclosure in the SAS chain.
      The previous enclosure is now the end of the SAS chain. Proceed to step 9.
8. If the expansion enclosure is not at the end of a SAS chain, complete the following steps to remove the enclosure from the SAS chain.
   1. Disconnect the SAS cable from port 2 of canister 1 of the expansion enclosure that you want to move.
   2. Disconnect the other end of the same SAS cable from port 1 of canister 1 of the next expansion enclosure in the SAS chain.
   3. Disconnect the SAS cable from port 1 of canister 1 of the expansion enclosure that you want to move.
   4. Reroute the cable that was disconnected in the previous step and connect it to port 1 of canister 1 of the next expansion enclosure in the SAS chain.
      Do not continue until you complete this connection step.
   5. Disconnect the SAS cable from port 2 of canister 2 of the expansion enclosure that you want to move.
   6. Disconnect the other end of the same SAS cable from port 1 of canister 2 of the next expansion enclosure in the SAS chain.
   7. Disconnect the SAS cable from port 1 of canister 2 of the expansion enclosure that you want to move.
   8. Reroute the cable that was disconnected in the previous step and connect it to port 1 of canister 2 of the next expansion enclosure in the SAS chain.
9. Take the I/O group out of maintenance mode by entering the following command.

   chiogrp -maintenance no iogroup_name_or_id

10. Check the event log for any errors and fix those errors as needed.
11. Disconnect the power from the expansion enclosure that you want to move.
12. Remove the expansion enclosure from the rack along with its two power cables and two SAS cables.
13. Add the expansion enclosure to the other system, near to its new control enclosure.