Converting standard-provisioned volumes

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You can convert standard-provisioned volumes to thin-provisioned volumes.

About this task

You can non-disruptively convert a standard-provisioned volume into a thin-provisioned volume by following this procedure:

Procedure

  1. Select a single copy, standard-provisioned volume.
  2. Add a thin-provisioned copy to the volume.
    Use a small real capacity and the autoexpand feature.
    You can also choose to have the system automatically remove the standard-provisioned copy after the thin-provisioned volume is synchronized or you can manually remove it.
  3. Wait while the volume mirroring feature synchronizes the copies.
  4. Optional: Remove the standard-provisioned copy from the thin-provisioned volume.

Results

Any grains of the standard-provisioned volume that contain all zeros do not cause any real capacity to be allocated on the thin-provisioned copy. Before you create the mirrored copy, you can fill the available capacity on the volume with a file that contains all zeros.