Quantum Scalar i40, Руководство пользователя

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Glossary
292 Quantum Scalar i40 and Scalar i80 User’s Guide
Loop ID A unique 7-bit value from 0 to 126 that represents the 127
valid AL_PAs (physical addresses) on a loop.
LTO (Linear Tape Open) A family of magnetic tape media that are
“open” in the sense of not being owned by a single proprietor.
LTO comes in two formats, Accelis and Ultrium. Accelis is the
fast access implementation, while Ultrium is the high capacity
implementation.
LUN (Logical Unit Number) A unique identifier used on a SCSI bus to
distinguish between devices that share the same bus. A LUN can
be an end user, a file, or an application. In storage technology, a
single large storage device might be divided into smaller pieces,
either to make the vast storage space more manageable or
because the storage space is dedicated to different servers,
drives, or applications. When the storage space is divided into
smaller parts, each part is configured with its own SCSI unique
identifier, or LUN.
M
Magazine
A container for removable media storage used in tape
libraries.
Media A material that stores data, such as tapes in cartridges or
optical disks.
Media ID A barcode number attached to a specific piece of media.
Media type A format/size of media, for example, LTO.
Medium See
Media
.
Mixed media The ability of a library to simultaneously support
multiple types of storage media.
N
N_Port Node Port. It only has the capability to communicate through
an F-Port. It is a port on a computer, disk drive, and so on,
through which the device does its Fibre Channel communication
as a direct fabric-attached port for use with the point-to-point
or fabric topology. It is identified by a world wide name.
NL_Port Node Loop Port. It has the capability to communicate over
both FC-AL hubs and through F_Ports.