Storage system configuration with Thin Image and GAD

Not all storage system configurations are supported when sharing a Thin Image volume with a GAD volume.

When you create a Thin Image pair using a volume from a GAD pair, the server recognizes the GAD P-VOL and S-VOL as a single volume. If you create Thin Image pairs using both the P-VOL and S-VOL of a GAD pair, the server recognizes the GAD P-VOL and S-VOL as a single volume being paired with multiple volumes by Thin Image.

Supported configurations

The following figure shows a supported storage system configuration with a Thin Image pair using a GAD P-VOL.

The following figure shows a supported storage system configuration with a Thin Image pair using a GAD S-VOL.

The following figure shows a supported storage system configuration with Thin Image pairs using a GAD P-VOL and S-VOL.

Unsupported configuration

You cannot create a GAD pair using Thin Image volumes that are already being used as a GAD P-VOL and S-VOL. The following figure shows this unsupported storage system configuration.