HP 316095-B21 - StorageWorks Edge Switch 2/24 Reference Manual page 208

trunk cable
Cable consisting of multiple fiber pairs that do not directly attach to an active device. This
cable usually exists between distribution panels. See also optical cable, contrast with jumper
cable.
unblocked port
Devices attached to an unblocked port can login to the Director or Edge Switch and
communicate with devices attached to any other unblocked port.
unicast
Communication between a single sender and a single receiver over a network. Compare to
multicast (communication between any sender and the nearest of a group of receivers).
universal port module (UPM) card
Each Director 2/64 UPM card provides four 2.125 Gbps Fibre Channel connections through
duplex small form factor (SFF) pluggable fiber-optic transceivers.
UPM card
See universal port module card.
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
Indication that a possible error has been detected. See also error message; information
message.
World Wide Name
(WWN)
Eight-byte address that uniquely identifies a Switch, or a node (end device) on global
networks.
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 or Edge Switch to which it is attached or by its World Wide Name. In
multiswitch fabrics, identification of end-devices/nodes by World Wide Name is preferable.