Create FlashCopy relationship — Select common options

Introduction

The options that you select determine the type of operations to be performed on the volume pairs during the FlashCopy operation.

Menu path

Fields

Make relationship(s) persistent

Retains the FlashCopy relationship after the background copy completes on the volume pair. When you select this option, the relationship between the source and the target volume remains indefinitely until the FlashCopy relationship is deleted. This option is a prerequisite for using the Refresh target volume operation. If you do not select this option, an automatic withdrawal of the FlashCopy relationship occurs when the background copy completes. This option defaults to not selected and displays on the Verification page as disabled).

Note: When you select the Enable change recording option, the Make relationship(s) persistent option is automatically selected and you cannot deselect it unless you first deselect the Enable change recording option. This occurs because a relationship must be persistent to enable change recording.

Initiate background copy

Starts a physical copy of all tracks on the source volume to the target volume. After a FlashCopy pair is created, an automatic withdrawal of the FlashCopy relationship occurs when all tracks on the source volume have been physically copied to the target volume unless the Make relationship(s) persistent option is selected. This is the only option that defaults to selected (which displays on the Verification page as enabled).

Note: If you deselect this option, a track is copied from the source volume to the target volume only if a track on the source volume is modified, a track on the target volume is read, or a background copy is initiated later. A track might also be copied as a result of internal performance enhancement algorithms.

Enable change recording

Monitors writes and records changes on the volume pair that is participating in a FlashCopy relationship. Selecting this option automatically enables the Make relationship(s) persistent option and makes disabling it unavailable since a relationship must be persistent to enable change recording. Both options are required to refresh a FlashCopy relationship later. This option defaults to not selected and displays on the Verification page as disabled.

Permit FlashCopy to occur if target volume is online for host access

Allows a FlashCopy relationship to be created if the target volume is online to a zSeries^® host system. If this option is not selected and the target volume is online to a zSeries host system, the create FlashCopy relationship task fails. This option defaults to not selected and displays on the Verification page as disabled.

Establish target on existing Metro Mirror source

Creates a point-in-time copy of a volume, and, through Metro Mirror, makes a copy of that point-in-time copy at a remote site. This option creates a local point-in-time backup and a remote point-in-time backup. If this option is not selected and the FlashCopy target volume is a Metro Mirror source volume, the create FlashCopy relationship task fails. This option defaults to not selected and displays on the Verification page as disabled.

Displays the sequence number that is defined for the FlashCopy relationships. The sequence number is a maximum of eight hexadecimal digits in length. The FlashCopy sequence number corresponds to a particular relationship that is created. If the FlashCopy sequence number that is specified does not match the sequence number of a current relationship or if a sequence number is not specified, the selected operation is performed. If the FlashCopy sequence number that is specified matches the sequence number of a current relationship, the operation is not performed. The default value is zero.

< Back

Takes you to the previous step of the wizard.

The previous step of the Create FlashCopy wizard is Select target volumes.

Next >

Takes you to the next step of the wizard. You cannot proceed to the next step until you have completed all required fields.

There are no required fields. The next step of the Create FlashCopy wizard is Verification.

Finish

Completes the task and takes you to the main page. This button is disabled until you enter all of the required information in the wizard.

This button is disabled because this is not the last step of the Create FlashCopy wizard.

Cancel

Ends the wizard and returns you to the main page without completing the task.

If you click the Cancel button, the FlashCopy main page is displayed.