Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

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Creating Volumes
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This chapter describes how to create volumes in VERITAS Volume Manager (VxVM).
Volumes are logical devices that appear as physical disk partition devices to data
management systems. Volumes enhance recovery from hardware failure, data availability,
performance, and storage configuration.
Note You can also use the VERITAS Intelligent Storage Provisioning (ISP) feature to
create and administer application volumes. These volumes are very similar to the
traditional VxVM volumes that are described in this chapter. However, there are
significant differences between the functionality of the two types of volume that
prevents them from being used interchangeably. Refer to the VERITAS Storage
Foundation Intelligent Storage Provisioning Administrator’s Guide for more information
about creating and administering ISP application volumes.
Volumes are created to take advantage of the VxVM concept of virtual disks. A file system
can be placed on the volume to organize the disk space with files and directories. In
addition, you can configure applications such as databases to organize data on volumes.
Note Disks and disk groups must be initialized and defined to VxVM before volumes can
be created from them. See “Administering Disks” on page 59 and “Creating and
Administering Disk Groups” on page 131 for more information.