HP XP P9000 Provisioning for Mainframe Systems User Guide

Create LDEV function
Use the Create LDEV function to create a customized variable-sized volume. Use Virtual LVI to
create mainframe volumes.
You can also use the Create LDEV function to create a volume to be used as a system disk on either
a mainframe or an open system. A system disk is not available to hosts, command devices, pool
volumes, journal volumes, and so on. For more information, see “Using a system disk” (page 52).
The following depicts an example of creating customized volumes. First you delete FVs to create
free space. Then you can create one or more customized volumes of any size in that free space.
Creating an LDEV
Use this procedure to create one or more internal or external logical volumes (LDEVs) in a selected
storage system. You can create multiple LDEVs at once, for example, when you are setting up your
storage system. After the storage system is set up, you can add LDEVs as needed.
Before creating an LDEV in a selected storage system, free space may need to be created. Before
volumes are deleted to create free space, make sure that the selected mainframe volumes are
disconnected from the host and do not contain data that may be required later.
You can create LDEVs using any of the following tabs in Remote Web Console:
• Parity Groups tab when selecting Parity Groups.
You can create multiple LDEVs in the specified free space by setting the necessary items
collectively. If multiple free spaces are in one parity group, the number of free spaces appears
in Total Selected Free Space in the Parity Group Selection section on the Create LDEVs wizard.
Confirm the number of free spaces, and then create the LDEVs accordingly.
For example, if you are creating LDEVs in parity group PG1-1 and it contains two free spaces,
2 appears in Total Selected Free Space. In this case, if you specify 1 in Number of LDEVs per
Free Space, and continue to create the LDEV, two LDEVs are created because one LDEV is
created for each free space.
• LDEVs tab when selecting any parity group in Parity Groups.
• LDEVs tab when selecting Logical Devices.
Procedure 6 To create an LDEV
1. In the Remote Web Console main window, in the Storage Systems tree, select the resource to
view in the tab, and then click Create LDEVs.
2. In the Create LDEVs window, from the Provisioning Type list, select a provisioning type for the
LDEV to be created.
• If creating internal volumes, select Basic.
• If creating external volumes, select External.
3. In System Type, select Mainframe to create mainframe volumes.
4. From the Emulation Type list, select an emulation type for the selected system type.
5. If creating an internal volume, select the parity group, and then do the following:
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