Deleting an LDEV (converting to free space)

You can convert one or more of the LDEVs on a selected parity group into free space by deleting the LDEVs. That free space can be used to either create one or more variable-sized volumes (CVs) using the Create LDEVs function, or left as free space for future use.

 Deleting LDEVs will erase your data. Back up your data before deleting LDEVs.

An LDEV cannot be deleted successfully if it is:

• In the defined path (including the pair volumes of TrueCopy, global-active device, and Universal Replicator).

• A pool-VOL.

• A journal volume.

• A remote command device.

• A volume security volume.

• A quorum disk used by global-active device.

• An LDEV that has the Read/Write access attribute.

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 Universal Volume Manager User Guide.

Before you begin

• The Storage Administrator (Provisioning) role is required to perform this task.

• Back up your data before deleting LDEVs.

Procedure

1. Open the Logical Devices window.

In Command Suite:

1. On the Resources tab, click Storage Systems, and then expand All Storage Systems and the target storage system.

2. Right-click Volumes, and then select System GUI.

In Device Manager - Storage Navigator:

1. Click Storage Systems, and then expand the Storage Systems tree.

2. Click Logical Devices.

 If deleting an LDEV carved from the accelerated compression-enabled parity group, format LDEVs in advance. By the formatting of LDEVs, the pool capacity which is assured of writing is released from data written in the formatted LDEVs. If only deleting of LDEVs, the used capacity which is assured of writing is not decreased. The used capacity is decreased by formatting of LDEVs.

2. Select the LDEV ID of the LDEV you want to delete.

3. Click More Actions and select Delete LDEVs.

The LDEV is deleted.

4. Note the settings in the Confirm window and enter a unique Task Name or accept the default, and then click Apply.

If Go to tasks window for status is checked, the Tasks window opens.