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# Modify storage templates

Storage templates are a reusable set of storage requirements that simplify storage management for virtual data centers by eliminating many of the repetitive tasks that are required to create and make storage available to hosts or applications.

## Prerequisites

- The user must have Administrator or StorageAdmin permissions.

## Steps

To modify a storage template:

1. From the main menu, click Unisphere for PowerMax.
   The home dashboard view is displayed.
2. Optional: Go to the left panel and click Configuration > Provisioning Templates to open the Provisioning Templates view.
3. Select the template and click Modify to open the Modify Template dialog.
4. Modify the template.

   All the fields are exactly like the Save as a Template dialog. The only difference is how the scale limits work when volume size or volume count field is left empty.

   If the selected template has both volume size and count when it was created and the user removes one or either of them during the modification operation with scale limits switched on, the original capacity of the template is used for the display purposes and it is shown in the tooltip next to the IOPS/MBPS field and upper right corner of the chart.

   If the selected template did not have either volume size and count when it was created and the user leaves one or either of the fields empty modification operation with scale limits switched on, the capacity of 200 GB is used for the display purposes and it is shown in the tooltip next to the IOPS/MBPS field and upper right corner of the chart.

5. Click OK.