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Chapter 10. Copy services 527

9. Check the result of this FlashCopy mapping, as shown in Figure 10-30. For each

FlashCopy mapping relationship that is created, a mapping name is automatically

generated that starts with fcmapX where X is the next available number. If necessary, you

can rename these mappings, as shown in Figure 10-30. For more information, see

10.4.11, “Renaming FlashCopy mapping” on page 543.

Figure 10-30 FlashCopy mapping

The FlashCopy mapping is ready for use.

10.4.2 Single-click snapshot

The snapshot creates a point-in-time backup of production data. The snapshot is not intended

to be an independent copy. Instead, it is used to maintain a view of the production data at the

time that the snapshot is created. Therefore, the snapshot holds only the data from regions of

the production volume that changed since the snapshot was created. Because the snapshot

preset uses thin provisioning, only the capacity that is required for the changes is used.

Snapshot uses the following preset parameters:

򐂰 Background copy: No

򐂰 Incremental: No

򐂰 Delete after completion: No

򐂰 Cleaning rate: No

򐂰 Primary copy source pool: Target pool

Note: If the FlashCopy target volume is a generic volume and is not ready, then the

volume may be getting formatted. Check the running tasks in the GUI.

Tip: You can start FlashCopy from the GUI. However, the use of the GUI might be

impractical if you plan to handle many FlashCopy mappings or Consistency Groups

periodically or at varying times. In these cases, creating a script by using the CLI might be

more convenient.

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