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# View CU images

Unisphere supports the viewing of CU images.

## Prerequisites

See Roles and associated permissions to determine the user roles that can perform this task.

## About this task

To view the CU images list view:

## Steps

1. Select the storage system.
2. Click Hosts > Mainframe.
3. Click the number under CU Images, to display the CU Images list view.
4. The following properties display:

   CU Image Number | The CU image number.
   SSID | The netmask prefix value of the IP interface.
   Split | The name of the split containing the CU image.
   Number of Volumes | The number of volumes that are mapped to the CU image.
   Storage Groups | The number of storage groups containing volumes that are mapped to the CU image.
   Total Number of Base Addresses | The total number of the base addresses configured on the CU image. The total includes used plus unused base addresses.
   Number of Aliases | The number of aliases in use on the CU image.
   Status | The status of volumes in the CU image.

   To view more details, click .

   The following controls are available:
   - Create— Creating and modifying CU images
   - Modify— Creating and modifying CU images
   - —Creating and modifying CU images
   - z/OS Map— z/OS map from the CU image list view
   - z/OS Unmap— z/OS unmap from the CU image list view
   - Assign Alias Range— Add an alias range to a CU image
   - Remove Alias Range— Remove an alias range from a CU image