HP StorageWorks XP Remote Web Console Software - Manual (Page 61)

LUN Configuration and Security Manager XP user guide for the XP128/XP1024 61
• Install CV: Creates custom volumes from free space.
• Make Volume: Converts a custom volume back to a normal volume (VDEV).
The Make Volume function clears all custom volumes under a VSC volume and creates an initial volume
(VDEV) that consists of new user-defined custom volumes.
The Volume Initialize function uninstalls all custom volumes under a VSC volume, and reformats the VSC
volume as a normal volume (VDEV).
Compared to other emulation types, use OPEN-V to easily create volumes of any size. OPEN-V volumes
always consist of custom volumes, instead of fixed-size volumes.
CAUTION: VSC operations are destructive. Back up your data before performing VSC operations.
Figure 29 and Figure 30 show a sample VDEV (whose components are LDEVs) in its initial condition and
the VDEV after custom volumes are created.
Figure 29 VSC process (all supported emulation types except for OPEN-V)
Figure 30 VSC process (OPEN-V)
Parity group configuration
This section explains the parity group configuration of emulation types other than OPEN-V. OPEN-V
volumes always consist of variable sized volumes instead of fixed-size volumes (FVs). To use OPEN-V,
parity groups must be enabled to support the OPEN-V emulation type. To enable OPEN-V, contact your HP
account support representative.
For emulation types other than OPEN-V, one parity group consists of a maximum of 16 VDEVs. For RAID-5
(7D + 1P) level or RAID-6 (6D + 2P) levels, a maximum of 512 fixed-size volumes (FVs), and a certain