HP StorageWorks Fabric OS 5.X Master Glossary (AA-RW7NA-TE, September 2005)

WDM Wavelength division multiplexer. A set of technologies that allows multiple
wavelengths to be combined or filtered on a single cable.
See DWDM.
well-known ad-
dress
In Fibre Channel technology, a logical address defined by Fibre Channel
standards, as assigned to a specific function and stored on the switch.
workstation A computer used to access and ma nage the fabric. Also called management
station or host.
WTV Write timeout value. An ELS field that appears in portLogDump command
output.
WWN World Wide Name. An identifier that is unique worldwide. Each entity in a
fabric has a separate WWN.
WWN-level zon-
ing
This type of zoning defines a zone member using a WWW port or a WWN
node. Defining a zone mem b er with a WWN allows the member (device) to
be attached without regard to its physical loc ation.
X.25 A p rotocol that uses logical channels. X.25 allows high-quality communications
between computers and can acc om m od a te noisy data communications through
error-detection and error-correction (retransmission) algorithms.
zone A collection of Fibre Channel N_Ports and NL_Ports ( device ports) that are
allowed to communicate with each other via the fabric. Any two N_Ports and
NL_Ports that are not members of at least one common zone are not permitted
to communicate via the fabric. Zone membership may be specified by:
• Por t location on a switch (for example, Domain_ID and port number)
• Device N_Port_Name
• Device Node_Name device’s address identifier
• Device Node_Name
Well-known addresses are implicitly included in every zone. D evices and hosts
within the same zone have access to others in the zone but are not visible to
any o utside the zone.
zone configuration Aspecified set of zones. Enabling a configuration enables all zones in that
configuration.
See also defined zone configuration, enabled zone configuration,andeffective
zone configu ration.
zone configuration
object
Defines a list of zone objects. The zone database can contain several zone
configuration objects, b ut only one zone configuration object can be enabled
andenforcedatatime.
See also zone object.
zone member The specification of a device to be included in a zone. A zone member may be
defined as a port on a switch or a World Wide Name. A zone member can
belong to more than one zone at a time.
See also port-level zoning and WW N -level zoning.
zone object Defines a list of zone mem b ers. A zone o bject can exist across multiple zone
configuration objects.
zoning A feature in fabric switches or hubs that allows segmentation of a no d e by
physical port, name, or address.
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Glossary