HP 958-000290-000 - Manual (Page 137)

edge switch 2/32 installation guide Glossary–17
Glossary
unblocked port
Devices attached to an unblocked port can login to the director and communicate with devices
attached to any other unblocked port assuming that this is supported by the current zoning
configuration.
unicast
Communication between a single sender and a single receiver over a network. Compare to
multicast and anycast (communication between any sender and the nearest of a group of
receivers).
universal port module card
Each universal port module (UPM) card provides four Fibre Channel connections through
duplex small form factor (SFF) pluggable fiber-optic transceivers. UPM cards allow 1 Gb/s
and 2 Gb/s operation.
vital product data
System-level data stored by the backplane in the electrically erasable programmable read-only
memory. This data includes serial numbers and identifies the manufacturer.
UPM card
See universal port module card.
VPD
See vital product data.
warning message
Indication that a possible error has been detected. See also error message and information
message.
wrap plug
See loopback plug.
World Wide Name
Eight byte address that uniquely identifies a switch, or a node (end device), even on global
networks.
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.