Symantec 5.1 manual Storage database by a rediscover operation. Contrast with delete

	CommandCentral Glossary 39
	deleted objects, destroyed objects cannot be restored to the CommandCentral
	Storage database by a rediscover operation. Contrast with delete.
device	A collective term for disks, tapes, disk arrays, tape arrays, and any other objects
	that store data. Also storage device.
device handle	The name the operating system uses to identify a storage resource (known as an
	addressable unit or LUN), and the correct means (driver, system call) to access it.
	Also OS handle.
discovery	The process of finding objects on the storage network and adding information
	about them to a database. In CommandCentral Storage, most discovery is done
	by the Hardware Abstraction Layer, which stores information about storage
	resources in the CommandCentral Storage database. Discovery of storage arrays
	is performed by the Veritas Array Integration Layer (VAIL). See also explorer and
	extended discovery.
discovery data store	In CommandCentral Storage version 4.x, the cached database containing the
	names and attributes of all objects discovered and maintained by the SAN Access
	Layer (SAL). In version 5.x, the discovery data store no longer exists. Discovery
	data is stored in the CommandCentral Storage database.
disk array	A collection of disks controlled and managed through firmware. See also storage
	array.
disk device	A rewriteable, randomly addressable data storage device.
disk group	A collection of disks that share a common configuration. A disk group
	configuration is a set of records containing detailed information on existing Veritas
	Volume Manager objects (such as disk and volume attributes) and their
	relationships. Each disk group has an administrator-assigned name and an
	internally defined unique ID. The root disk group (rootdg) is a special private disk
	group that always exists.
File Scanning explorer	Any one of several explorers in CommandCentral Storage that gathers data by
	scanning data on in host file systems. See also DM (Data Module) Importer.
DMP (Dynamic	A feature of Veritas Volume Manager that provides greater reliability and better
Multipathing)	performance by using path failover and load balancing for multiported disk arrays
	connected to host systems through multiple paths. DMP detects the various paths
	to a disk using a mechanism that is specific to each supported array type. DMP
	can also differentiate between different enclosures of a supported array type that
	are connected to the same host system.
enclosure	In CommandCentral Storage, a method for visually grouping objects in the
	Console’s Managing Summary pane or Topology Map. For example, a user might
	choose to represent a JBOD visually as an enclosure instead of as one or more
	separate disks.