Create FlashCopy Logical Drive Wizard: Introduction

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The first screen of the Create FlashCopy Logical Drive Wizard allows you to select either the simple or advanced path to be followed through the Wizard.

The simple path (which is recommended) allows you to specify basic FlashCopy logical drive parameters and accepts the common default settings. The advanced path enables you to customize advanced settings for the FlashCopy logical drive, including specific capacity allocation, the repository logical drive full conditions, and notification settings.

About the Simple Path

Select this option to specify basic FlashCopy parameters and accept the common default settings, then press Next when ready to move to the next Wizard screen.

Basic FlashCopy parameters include:

FlashCopy Logical Drive Name

Specify a name that helps you associate the FlashCopy logical drive to its corresponding repository and base logical drive.

Repository Logical Drive Name

Specify a name that helps you associate the repository logical drive its corresponding FlashCopy and base logical drive.

Repository Logical Drive Capacity

Specify the repository logical drive's capacity as a percentage of the base logical drive capacity.

The following FlashCopy parameters are automatically set to these common defaults:

Capacity allocation

The repository logical drive will be created using free capacity on the same array where the base logical drive resides.

Logical Drive-to-LUN mapping

The FlashCopy is given an automatic logical drive-to-LUN mapping, if Storage Partitioning is not enabled. If this feature is enabled, the default setting is Map Later with Storage Partitioning.

Percent full

When the repository logical drive reaches the specified threshold level , it will log the event and the icon will change in the Physical/Logical View. The default threshold percentage is set to 50% of the base logical drive.

Repository logical drive full conditions

If the repository logical drive becomes full, the FlashCopy logical drive will fail.

About the Advanced Path

Select this option to set the basic FlashCopy parameters and four advanced FlashCopy parameters, then press Next when ready to move to the next Wizard screen.

Advanced FlashCopy parameters you will set include:

Capacity allocation

You are given a choice of where to physically place the repository logical drive. (You can use free capacity on the same array where the base logical drive resides, use free capacity on another array, or use unconfigured capacity and create a new array for the repository logical drive.)

Note: It is better if the repository logical drive resides within the array where the base logical drive resides. This ensures that if drives associated with the array are moved to another storage subsystem, all logical drives associated with the FlashCopy logical drive reside on that group, and no further drives need to be moved.

Logical Drive-to-LUN mapping

You are given a choice whether to give the FlashCopy an automatic logical drive-to-LUN mapping, or map the FlashCopy logical drive later using Storage Partitioning.

Note: If Storage Partitioning is not enabled, the default setting is Automatic. If this feature is enabled, the default setting is Map Later with Storage Partitioning.

Percent full

When the repository logical drive reaches the specified threshold percentage, it will log the event and the icon will change in the Physical/Logical View. The default threshold percentage is set to 50% of the base logical drive.

Repository logical drive full conditions

You are given a choice of failing writes to the base logical drive, or failing the FlashCopy logical drive when the repository logical drive becomes full.

Related Topics

Creating a FlashCopy Logical Drive Using the FlashCopy Logical Drive Wizard

Managing Logical Drives