You can use the management GUI to remove the control enclosure and all its attached
expansion
enclosures.
Before you remove a control enclosure and its expansion enclosures.
- Make sure your volume data has recently been backed up.
- Consider the volumes, hosts, and arrays affected by the removal, determine:
- All the volumes that belong to the I/O group being removed and the hosts that require access to
them.
- Which arrays have member drives in the enclosures being removed.
- The list of volumes that are dependent on these arrays.
You can use the management GUI and command-line interface (CLI) filtering capabilities to
obtain this information.
- Decide which volumes identified above are still required, and plan for their migration. You
should consider both available storage pool capacity, and the system configuration limits when doing
this.
- Delete any volumes that are no longer required.
- Move any remaining volumes that are accessed the through the I/O group being removed to a
different I/O group.
Any hosts that use these volumes must be reconfigured so they retain access.
- Migrate any remaining volume data from the arrays in the I/O group being removed by:
- Migrate the entire volume copy to another storage pool. This method is preferable when the
majority of the arrays in the current storage pool are from the I/O group being removed.
- Migrate the volume data extents to other arrays or managed disks (MDisks) within the current
storage pool. Deleting an array forces migration of all volume extents allocated on it to other
arrays in the pool. You can also migrate extents for each volume individually. This method is
preferable when the majority of the storage capacity in the pool is provided by other I/O groups or
external controllers.
Important: Wait for the migrations to complete before continuing. You can use the
management GUI to monitor the migration progress.
- Delete any remaining arrays that are formed from drives in the I/O group being removed.
If any arrays still show dependent volumes, repeat the previous step and migrate the data for
these volumes.
- Mark all the drives (including any configured as spare drives) in the enclosures to be removed
as unused.
- The enclosures can now be unmanaged and removed from the system.
Use the management GUI to remove the expansion enclosures first. The control enclosure should
be removed last, after all expansions. From the management GUI, select .
- Right-click the enclosure to be removed and select Remove.
- The control enclosure and attached expansions are now removed from the system.
Use the power switches to shut them down.