HP StorageWorks XP Remote Web Console Software - Manual (Page 57)

LUN Configuration and Security Manager XP user guide for the XP1024/XP128 57
Volume to Space operation
The Volume to Space function converts one or more LDEVs (fixed or custom volumes) into free space,
which deletes the selected LDEVs from that volume.
Restrictions
• The LDEV must not have a path definition, including TrueCopy (TC390), Continuous Access XP,
ShadowImage (SI390), Business Copy (BC), and Continuous Access XP Journal pair volumes.
• The LDEV must not be a component of a LUSE volume. This applies to all supported emulation types
except for OPEN-V.
• The LDEV must not be reserved for Auto LUN.
• The access attribute must be set to Read/Write.
Install Custom Volume (CV) operation
The Install CV function defines and installs one or more CVS volumes under an existing volume (free space
in a VDEV). You can assign a specific number of physical cylinders (for mainframe systems) or MB (for
open systems) to each CVS volume for maximum control over the volume size.
When you specify the capacity and the emulation type other than OPEN-V for a CVS volume to be
created, the Install CV function automatically creates and formats the CVS volume in sufficient free space.
You must specify a new CU number and LDEV number for the created CVS volume. The created CVS
volume contains the user-specified number of user cylinders and a predetermined number of control
cylinders by the emulation type.
If you select free space and perform an Install CV operation, CVS volumes will be created only in the
selected free space.
For OPEN-V volumes, there are four ways to create CVS volumes (
Table 17 ). You can specify from 46 MB
(50 cylinders) up to the maximum capacity of VDEV for the capacity of a volume. If the specified capacity
exceeds 60 gigabytes (65,535 cylinders), the Install CV function creates the volume in LUSE configuration
automatically.
When there is only one free space in the VDEV, you can use any method to create CVS volumes. When
there are two or more free spaces, you can use the first method only. The other methods are not available.
NOTE: Virtual LUN operations are not available for OPEN-L volumes.
NOTE: Volume Management functions are not available for OPEN-L and OPEN-M volumes.
NOTE: Allocating custom volumes in descending order of capacity optimizes custom volume allocation
during the Install CV process.
Table 17 Creating CVS volumes by Install CV (for OPEN-V)
No. Install CV method Description
1 Specify size and number Used to specify the capacity and the number of custom volumes in the
CVS volume that you want to create.
2 Divide free space by number Used to create CVS volumes by specifying the number of custom
volumes in the CVS volume to be created.
3 Divide free space by size Used to create CVS volumes by specifying the capacity of custom
volumes in the CVS volume to be created.
4 Set remaining space as volume Used to create a CVS volume using the remaining space on the VDEV.