Creating VDisks for FlashCopy targets

You can select an existing source virtual disk (VDisk) to use to create target VDisks for FlashCopy® mappings. The Creating VDisk for use as FlashCopy Targets wizard in the SAN Volume Controller Console lets you create one or more source VDisks for mappings.

The FlashCopy feature makes an instant copy of a VDisk at the time that it is started. To create an instant copy of a VDisk, you must first create a mapping between the source VDisk (the disk that is copied) and the target VDisk (the disk that receives the copy). The wizard ensures that the source and target VDisks are equal size.

The wizard takes you through the following steps to create a target VDisk for FlashCopy mappings:

Specifying the I/O group and the preferred node for the target VDisk
Setting attributes for the source VDisk, such as the number of VDisks that you are creating and space-efficient attributes
Selecting the managed disk (MDisk) groups and MDisk for all the target VDisks
Naming the VDisk
Note: The target name is added to the source VDisk name and is incremented if multiple target VDisks are being created. Full names for the target VDisks cannot exceed 15 characters. Only VDisks with unique names are created. If you have previously created target VDisks, they are not created. To check whether the specified name for the VDisk exists on the cluster, select Check Name Availability on the Name the VDisk panel in the wizard. This action displays names that are currently defined on the cluster and, as a result, are not created as a target VDisk.
Verifying the target VDisk attributes and settings

This task assumes that you have already launched the SAN Volume Controller Console.

To create target VDisks for FlashCopy mappings, complete the following steps:

In the portfolio, click Work with Virtual Disks > Virtual Disks. The Viewing Virtual Disks panel is displayed.
Select the VDisk to use as the source VDisk for the FlashCopy mapping. From the task list, select Create VDisks For Use as FlashCopy Targets. Click Go.
Select the host that you want to modify. From the task list, select Modify a Host. Click Go. The Create VDisks For Use as FlashCopy Targets wizard begins.
Complete the Create VDisks For Use as FlashCopy Targets wizard. For detailed information regarding the fields and options that are displayed on the wizard panels, use the online help in the SAN Volume Controller Console.