Chapter 9. Storage migration 393
Before you migrate storage, record the hosts and their WWPNs or IQNs for each volume 
that is being migrated and the SCSI LUN when mapped the Storwize V7000.
Table 9-1 shows an example of a table that is used to capture information that relates to 
the external storage system LUs.
Table 9-1   Example table for capturing external LU information 
Click Next and wait for the system to discover external devices.
7. The next window shows all of the MDisks that were found. If the MDisks to be migrated are 
not in the list, check your zoning or IP configuration, as applicable, and your LUN 
mappings. Repeat the previous step to trigger the discovery procedure again.
Select the MDisks that you want to migrate, as shown in Figure 9-7. In this example, one 
MDisk (mdisk3) was found and is migrated. Detailed information about an MDisk is 
available by double-clicking it. To select multiple elements from the table, press Shift and 
then left-click or Ctrl and then left-click. Optionally, you can export the discovered MDisks 
list to a CSV file for further use by clicking Export to CSV.
Figure 9-7   Discovering mapped LUs from external storage
Volume Name or ID Hosts accessing 
this LUN
Host WWPNs or 
IQNs
SCSI LUN when 
mapped
1 IBM DB2® logs DB2server 21000024FF2... 0
2 DB2 data DB2Server 21000024FF2... 1
3 file system FileServer1 21000024FF2... 2
Note: Make sure to record the SCSI ID of the LUs to which the host is originally 
mapped. Some operating systems do not support changing the SCSI ID during the 
migration.