HP Tape Library Interface Manager Software - Manual (Page 131)

Glossary 131
Local Area Network
(LAN)
A communications system with dimensions that are typically less than
5 kilometers. Transmissions within a local area network are mostly digital,
carrying data among stations at rates usually above one megabit/sec.
loop address A FC term indicating the unique ID of a node in Fibre Channel loop topology,
sometimes referred to as a Loop ID. Also a status type in the FC Status menu,
showing the FC Loop Address of the Interface Manager.
Loop Port (L_Port) A FC port that supports loops.
LUN Logical Unit Number or Logical Unit; a subdivision of a SCSI target. For SCSI-
3, each SCSI target supports up to sixteen LUNs (LUN-0 to LUN-16). Using
LUNs, the FC host can address multiple peripheral devices that may share a
common controller.
M
Mb Megabit.
MB Megabyte. (There are 8 bits in a byte.)
MIA An acronym for the media interface adapter plug-ins, which allow you to go
from copper to optical or visa versa.
MIB See Management Information Base.
MIM An acronym for the Media Interface Module.
Management
Information Base
(MIB)
A structured set of data variables, called objects, in which each variable
represents some resource to be managed. A related collection of resources to
be managed.
mapping table A table which is indexed by sequential LUN values, indicating selected
BUS:TARGET:LUN devices. It is used by the Interface Manager to perform
Fibre Channel-to-SCSI operations by default.
multicast Refers to delivering a single transmission to multiple destination N_ports.
N
N_Port A FC term defining a Node port. A FC-defined hardware entity that performs
data communication over the FC link. It is identifiable by a unique Worldwide
Name. It can act as an originator or a responder.