System information

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Eclipse™ 2640 SAN Router Administration and Configuration Manual
Glossary
LMA See loader/monitor area.
load balancing Ability to evenly distribute traffic over multiple interswitch links
within a fabric. Load balancing on McDATA directors and switches
takes place automatically.
loader/monitor area LMA. Code that resides in the loader/monitor area of the control
processor (CTP) card. Among other functions, LMA code provides
I/O functions available through the maintenance port, operator
panel, server interface, terminal window command functions, power
up diagnostics, field-replaceable unit (FRU) power-on hours update,
and data read/write control, and LMA code/licensed internal code
(LIC) download functions (D).
local Synonym for channel-attached.
local area network LAN. A computer network in a localized geographical area (for
example, a building or campus), whose communications technology
provides a high-bandwidth medium to which many nodes are
connected (D). See also
metropolitan area network; metro-area storage
area network (mSAN); wide area network.
logical partition LPAR. A processor hardware subset defined to support the operation
of a system control program, and can be used without affecting any
of the applications in another partition (D).
logical port address In a director or switch, the address used to specify port connectivity
parameters and to assign link addresses for the attached channels
and control units.
logical unit number LUN. In Fibre Channel addressing, a logical unit number is a number
assigned to a storage device which, in combination with the storage
device’s node port’s world-wide name, represents a unique identifier
for a logical device on a storage area network. Peripherals use LUNs
to represent addresses. A small computer system interface (SCSI)
device’s address can have up to eight LUNs.
login server Entity within the Fibre Channel fabric that receives and responds to
login requests.
longwave Lasers or light-emitting diodes (LEDs) that emit light with
wavelengths around 1300 nm. When using single mode (9 nm) fiber,
longwave lasers can be used to achieve lengths greater than 2 Km.