Preventing write operations on FlashCopy target volumes

Complete this task to prevent (inhibit) host write operations on FlashCopy^® target volumes. By inhibiting writes on the target volume, you ensure that the target is an uncorrupted incremental backup.

When you select the Inhibit writes to target option to prevent host write operations on the target volume, the change recording feature is not active on the target volume. Write operations are not allowed on the target volume; therefore, the change recording bitmap for the target volume is not modified.

Note: By default, when the Resync FlashCopy action is issued, the FlashCopy relationship is established to act as an incremental FlashCopy. In addition, by default, when you issue the FlashCopy Revertible action to the FlashCopy volume pair, the source volume of the volume pair is write inhibited. This allows the FlashCopy relationship to revert (change back) to a previous consistent state, if needed. (The FlashCopy Revertible option was previously called the Record Changes option.)

Perform the following steps to prevent write operations on FlashCopy target volumes:

In the navigation, select Real-time Manager > Copy ServicesFlashCopy. A list of FlashCopy volumes is displayed.
Select one or more FlashCopy volume pairs to prevent write operations to the associated FlashCopy target volumes.
On the FlashCopy main page, select Resync FlashCopy from the Select Action drop-down list. Click Go. The Create new FlashCopy — Resync FlashCopy page is displayed.
Select "Enable all" for the Inhibit writes to target volume option.
Review the options and select the OK button to continue.