Symantec 5.1 manual Security, See NetApp unified storage, See Vail

CommandCentral Glossary 49

	when the SAN runs an unsupported HBA card or driver version, there is no
	managed host attached to the HBA, or the Management Server is not configured
	to communicate with the managed host. For storage devices, this can occur when
	no LUNs are visible to a managed host (usually due to zoning or LUN masking
	security).
unified logging	A common logging library used by Symantec products and components to log
	information about errors and other events. CommandCentral Storage users can
	manage and view these logs using Symantec common log tools: hallog, vxlogmgr,
	vxlogview, vxlogcfg, and vxloggen.
unified storage	See NetApp unified storage
unused storage	Storage to which data has not been written. Contrast with used storage
used storage	The portion of storage allocated to a file system or database to which data has
	been written, expressed as a quantity (such as 10 GB). Contrast with unused storage
VAIL (Veritas Array	A single, unified means for presenting information about disk storage array
Integration Layer)	subsystems to a variety of storage management software products including the
	CommandCentral Storage offering. VAIL has a configuration tool—vaildiag—with
	which you can configure VAIL providers to manage disk storage arrays.

VEA (Veritas Enterprise A separate middleware server used by the SAN Access Layer and other processes

Administrator) to provide client-server communication. The VEA infrastructure enables software components to share information about objects, manage those objects, and effect change on those objects.

Veritas Array	See VAIL.
Integration Layer

Veritas Cluster Server An open systems clustering solution that minimizes planned and unplanned

(VCS)	downtime, simplifies server consolidation, and allows the effective management
	of a wide range of applications in multiplatform environments.

Veritas Cluster Server A cluster consisting of multiple systems connected in various combinations to

cluster	shared storage devices. Cluster Server monitors and controls applications running
	in the cluster and can restart applications in response to a variety of hardware or
	software faults. A cluster is defined as all systems with the same cluster
	identification and connected via a set of redundant heartbeat networks. Clusters
	can have from one to 32 member systems, or nodes.

Veritas Cluster Server A set of resources working together to provide application services to clients. For

service group	example, a Web application service group might consist of: disk groups on which
	the Web pages to be served are stored; a volume built in the disk group; a file
	system using the volume; a database whose table spaces are files and whose rows
	contain page pointers; the network interface card or cards used to export the Web
	service; one or more IP addresses associated with the network card(s); the
	application program and associated code libraries. Cluster Server performs