Use this page to select copy options when restarting an existing,
persistent FlashCopy® relationship
that was created without the change recording feature enabled.
Introduction
This
process is used on a FlashCopy pair that was part of a Global Mirror configuration.
Menu path
Fields
- Make relationship(s) persistent
- Indicates whether the FlashCopy relationship is retained after the background
copy completes. When the FlashCopy is persistent, the relationship between
the source and the target volume remains indefinitely and the FlashCopy relationship
must be deleted. The persistent option is a prerequisite if you want to refresh
the target volume of a FlashCopy relationship later. It is automatically
enabled if you selected the Enable change recording option.
This option is disabled by default.
- Initiate background copy
- Starts a physical copy of all tracks on a source volume to a target volume.
After a FlashCopy pair
is created, an automatic withdrawal of the FlashCopy relationship occurs when
all source tracks have been physically copied to the target volume.
Note: If
you do not select this option, data is copied only from the source volume
to the target volume if a track on the source volume is modified, a target
track is read, or a background copy is started for performance reasons. This
option is disabled by default.
- Enable change recording
- Indicates whether the FlashCopy relationship is enabled or disabled.
With change recording enabled, the storage unit keeps track of updates to
both the source and target volumes from the time that you create a FlashCopy relationship.
The storage unit can identify updates that have occurred since the last FlashCopy relationship
was created. This option is disabled by default.
- 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.