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8068ch07-Migration.fm Draft Document for Review January 29, 2013 12:52 pm
278 IBM Flex System V7000 Storage Node Introduction and Implementation Guide
If the MDisks that need migrating are in the list, select them and click Next. The IBM Flex
System V7000 Storage Node starts to import the MDisks that you have chosen. If the
MDisks that need migrating are not in the list, you might need to check your zone
configuration and LUN mapping, and click Detect MDisks to run the IBM Flex System
V7000 Storage Node discovery procedure again.
You can select one or more MDisks as required, and detailed information about the MDisk
can be shown by double-clicking it.
In Figure 7-13 on page 277, two LUNs are discovered as MDisks that are candidates for
migration. In your particular situation, you might need to reference the information you
recorded earlier to identify these MDisks. In our example, the MDisks have been selected
to go forward to the next step.
When you click Next in this step, IBM Flex System V7000 Storage Node completes the
importation of the MDisks with the host’s data and a storage pool has been created. The
MDisks are added to the pool and image mode volumes (with the same size as the
MDisks) are created, which are ready for mapping back to the original hosts.
The Storage Migration Wizard creates a special migration pool that contains the copy
source and the copy destination volumes. When the Storage Migration has finished and it
has been Finalized by the administrator then the copy source MDisk returns to an
unmanaged MDdisk and the copy destination is now part of the volume that was selected
during the Storage Migration Wizard.
Note: If an unmanaged MDisk is manually added to a pool from the MDisks by Pool
Menu then this MDisk becomes managed and data is striped across it.