HP StorageWorks XP Remote Web Console Software - Manual (Page 63)

LUN Configuration and Security Manager XP user guide for the XP128/XP1024 63
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 VSC 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 VSC volume for maximum control over the volume size.
When you specify the capacity and the emulation type other than OPEN-V for a VSC volume to be
created, the Install CV function automatically creates and formats the VSC volume in sufficient free space.
You must specify a new CU number and LDEV number for the created VSC volume. The created VSC
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, VSC volumes will be created only in the
selected free space.
For OPEN-V volumes, there are four ways to create VSC volumes (
Table 18 ). 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 VSC 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 18 Creating VSC 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
VSC volume that you want to create.
2 Divide free space by number Used to create VSC volumes by specifying the number of custom
volumes in the VSC volume to be created.
3 Divide free space by size Used to create VSC volumes by specifying the capacity of custom
volumes in the VSC volume to be created.
4 Set remaining space as volume Used to create a VSC volume using the remaining space on the VDEV.