director 2/64 service manual

director 2/64 service manual Glossary–21
Glossary
vital product data (VPD)
System-level data stored by the backplane in the electrically erasable programmable read-only
memory. This data includes serial numbers and identifies the manufacturer.
VPD
See vital product data.
warning message
Software message that indicates a possible error was detected. See also error message and
information message.
world wide name (WWN)
Eight-byte address that uniquely identifies a switch, or a node (end device) on global
networks.
wrap plug
See loopback plug.
WWN
See world wide name.
zone
Set of devices that can access one another. All connected devices may be configured into one
or more zones. Devices in the same zone can see each other. Those devices that occupy
different zones cannot.
zone member
Specification of a device to be included in a zone. A zone member can be identified by the port
number of the director to which it is attached or by its world wide name. In multi-switch
fabrics, identification of end-devices/nodes by world wide name is preferable.
zone set
See zone.
zoning
Grouping of several devices by function or by location. All devices connected to a
connectivity product, such as the director, may be configured into one or more zones. See also
zone.