Creating a FlashCopy Logical Drive Using the FlashCopy Logical Drive Wizard

Related Topics

Important:

Procedure

1

Stop the host application accessing the base logical drive and unmount the base logical drive.

Important: Unmounting the base logical drive does not apply when the base logical drive is the root disk of the host operating system.

2

Select a base logical drive from the Logical View, then, select either the Logical Drive >> FlashCopy >> Create pull-down menu option, or Create FlashCopy Logical Drive from the right-mouse pop-up menu.

Result: The Create FlashCopy Logical Drive Wizard begins.

To learn more about the Wizard before you begin, see A Preview of the Create FlashCopy Logical Drive Wizard, below.

Caution: If the FlashCopy logical drive is to be based on the root disk of the host operating system, the final point-in-time image may not be completely consistent with the base logical drive.

3

Follow the directions on each Wizard screen and press the Next button when you're ready to move to the next Wizard screen.

Note: Each Wizard screen has context-sensitive help. Select the Help button to receive help applicable for that particular screen.

4

After you have created one or more FlashCopy logical drives, mount the base logical drive and restart the host application using that base logical drive.

5

Assign logical drive-to-LUN mappings between the FlashCopy logical drive and the host that will access the FlashCopy logical drive using the Mappings View of the Subsystem Management Window.

In some cases, depending on the host operating system and any logical drive manager software in use, mapping the same host to both a base logical drive and its associated FlashCopy logical drive may result in conflicts. For operating-system specific instructions, see Create FlashCopy Logical Drive Wizard: Additional Instructions.

6

Run the host-based hot_add utility to register the FlashCopy logical drive with the host operating system. Finally, run the host-based SMdevices utility to associate the mapping between the physical device name and the logical drive name.

Important: If you will use this FlashCopy on a regular basis (for example, for backup purposes), use the Disable FlashCopy and Re-create FlashCopy options to reuse the FlashCopy. This alleviates the need to stop the host application and unmount the base logical drive while the FlashCopy is being created again. Using the Disable FlashCopy and Re-create FlashCopy options also preserves the existing mappings to the FlashCopy logical drive. For more information, see Disabling a FlashCopy Logical Drive and Re-creating a FlashCopy Logical Drive.

A Preview of the Create FlashCopy Logical Drive Wizard

Simple Path

Advanced Path

Using Free Capacity:

The Advanced Parameter Settings screen allows you to define the FlashCopy logical drive-to-LUN mapping parameter, and the FlashCopy repository logical drive full conditions.

The Preview screen provides a preview of the FlashCopy and repository parameters, and allows you to return to previous screens to edit the parameters.

Using Unconfigured Capacity:

The Specify Array Parameters screen enables you to specify a new array where the repository will reside, and to specify the RAID level of the array that will meet FlashCopy repository logical drive data storage and protection requirements.

The Advanced Parameter Settings screen allows you to define the FlashCopy logical drive-to-LUN mapping parameter, the threshold percentage full parameter, and the FlashCopy repository logical drive full conditions.

The Preview screen provides a preview of the FlashCopy and repository parameters, and allows you to return to previous screens to edit the parameters.

Related Topics

FlashCopy Logical Drive Maintenance

Managing Logical Drives

Disabling a FlashCopy Logical Drive

Re-creating a FlashCopy Logical Drive