Veritas Storage Foundation Intelligent Storage Provisioning 5.0 Solutions Guide, HP-UX 11i v3, First Edition, May 2008

Glossary
application volume
An application volume is created by ISP, and then exported for use by an application such
as a database or file system. It is used with applications in the same way that you would use
traditional non-ISP volumes that you have created by using vxassist and other VxVM
commands, or via the graphical user interface.
capability
A capability is a feature that is provided by a volume. For example, a volume may exhibit
capabilities such as performance and reliability to various degrees. Each type of capability
is defined as a set of rules.
disk group
A disk group is a named collection of disks that share a common configuration. Volumes
and other VxVM objects must be created within a disk group, and are restricted to using
disks from within that disk group.
intent
A volume’s intent is a conceptualization of the volume’s purpose as defined by its
characteristics and implemented by a template. ISP attempts to preserve the intent of a
volume whenever the volume is reconfigured, resized, or relocated. Intent preservation
automatically conserves capabilities such as reliability and performance, and observes
additional rules such as allocating storage based on confinement and exclusion
specifications.
LUN
A LUN, or logical unit, can either correspond to a single physical disk, or to a collection of
disks that are exported as a single logical entity, or virtual disk, by a device driver or by an
intelligent disk array’s hardware. VxVM and other software modules may be capable of
automatically discovering the special characteristics of LUNs, or you can use disk tags to
define new storage attributes. Disk tags are administered by using the vxdisk command
or the graphical user interface.
pool
See storage pool.
remote mirror
The Remote Mirror feature of the Veritas Storage Foundation software.
rule
A rule is a statement written in the ISP language that specifies how a volume is to be
created. A rule can define selection of storage or layout of storage. Rules are usually
gathered together as templates for creating volumes, rather than being specified
individually.