HP XP P9000 Provisioning for Mainframe Systems User Guide

• An LDEV that has the Read/Write access attribute.
• An LDEV with the Volume Security for Mainframe setting.
When you delete an LDEV, the alias information contained in the LDEV is also deleted. Therefore,
if you delete an LDEV related to an alias device, you should do one of the following:
• Allocate another LDEV to the alias device, and then delete the LDEV.
• Delete the LDEV first, and then allocate another LDEV to the alias device.
For information about how to delete a registered external volume, see the HP XP P9000 External
Storage for Open and Mainframe Systems User Guide.
Procedure 7 To delete an LDEV
1. Select one or more LDEVs to be deleted.
2. Click More Actions and select Delete LDEVs.
3. In the Confirm window, confirm the settings, in Task Name type a unique name for this task
or accept the default, and then click Apply.
The LDEV is deleted. The alias information contained in the deleted LDEV is also deleted. If
the alias information is set to the LDEV, move it to another LDEV, or set it again after deleting
the LDEV.
If Go to tasks window for status is checked, the Tasks window opens.
Formatting LDEVs
If you initialize LDEVs that are being used, you will need to format the LDEVs. Read the following
topics before formatting LDEVs:
• “About formatting LDEVs” (page 47)
• “Storage system operation when LDEVs are formatted” (page 48)
• “Quick Format function” (page 48)
• “Write to Control Blocks function” (page 49)
Formatting LDEVs includes the following tasks:
• “Formatting a specific LDEV” (page 49)
• “Formatting all LDEVs in a parity group” (page 49)
About formatting LDEVs
The LDEV Format function, which includes Normal Format, Quick Format and Write to Control
Blocks. These functions format volumes, including external volumes. Before formatting volumes,
ensure that the volumes are in blocked status.
The following table lists which formatting functions can be used on which LDEV types.
Corresponding volumeFormatting function
Internal volumeNormal Format
Virtual volume
External volume
Internal volumeQuick Format
External volumeWrite to Control Blocks
Formatting LDEVs 47