IBM Storwize V5010 Manual page 674

A migration task starts and can be tracked through the System Migration panel within the
Pools menu, as shown in Figure 11-12. The actual data migration begins after the MDisk
is imported successfully.
Figure 11-12 Checking the migration status
When the migration completes, the migration status disappears and the volume is
displayed in the target pool, as shown in Figure 11-13.
Figure 11-13 Volume is assigned to the target pool
5. After the migration completes, the image mode volume is automatically deleted, but the
external LUN exists as a managed MDisk in the temporary storage pool. It is unassigned
from the pool and listed as an unassigned MDisk. Later, you can retire the external LUN
and remove it completely from the Storwize V5030 by unmapping the volume at the
external storage and by clicking Detect MDisks on the Storwize V5030. For more
information about removing external storage, see 11.2.4, "Removing external storage" on
page 658.
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Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1