7.2.3 Capacity savings option 7.3 Creating custom volumes When the Basic or Mirrored method of volume creation is sued, the GUI provides a Capacity  Savings option, which enables altering the volume provisioning parameters without the use of  the Custom volume provisioning method. You can select  Thin-provisioned  or  Compressed from the drop-down menu, as shown in Figure 7-16, to create thin-provisioned or compressed  volumes. Note:  Consider the compression guidelines in Chapter 10, “Advanced features for storage  efficiency” on page 403 before creating the first compressed volume copy on a system. When a thin-provisioned or compressed volume is defined in a data reduction pool, the  Deduplicated option becomes available. Select this option to enable deduplication of the  volume. The Create Volumes window also enables Custom volume creation that expands the set of  options for volume creation available to the administrator. The Custom menu consists of several panes: Work through these panes to customize your Custom volume as wanted, and then commit  these changes by clicking  Create . Chapter 7. Volumes  265 GLYPH<SM590000> Summary GLYPH<SM590000> General: For configuring for Cache mode and Formatting. GLYPH<SM590000> Compressed: Enables configuration of Compression settings if this capacity saving option  is selected. GLYPH<SM590000> Thin Provisioning: Enables configuration of Thin Provisioning settings if this capacity  saving option is selected. GLYPH<SM590000> Volume Details: Mandatory, defines the Capacity savings option. GLYPH<SM590000> Volume Location: Mandatory, defines the number of volume copies, Pools to be used, and  I/O group preferences. Figure 7-16 Volume Creation with Capacity Saving option 