VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Chapter 1, Understanding ISP

ISP Concepts

These concepts are defined in the following sections:

◆ Disk Group

◆ LUN

◆ Attribute

◆ Storage Pool

◆ Storage Pool Set

◆ Policy

◆ Capability

◆ Rule

◆ Volume Template

◆ Template Sets

◆ User Template

◆ Application Volume

◆ Intent

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.

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 VERITAS software modules may be capable of

automatically discovering the special characteristics of LUNs, or you can use the annotation

service, provided in the VEA graphical user interface, to define new storage attributes.

Attribute

A storage attribute allows the properties of a LUN to be defined in an arbitrary conceptual space.

For example, attributes can describe properties such as:

◆ Disk access name

◆ Disk media name