Sun Oracle Storage Tek T10000, Справочное руководство

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Glossary
264 T10000: Interface Reference Manual • January 2011 • E20425-01
nm Abbreviation for nanometers.
No Operation (NOP) The No Operation
command used in Basic Link Services. It is
prohibited when originated by the initiator, and
prohibited when originated by a drive.
Node A device that contains a minimum of one
N_Port or NL_Port.
Node Name A 64-bit concatenation of the Port
Name, Company ID, and drive serial number, in
an IEEE extended format.
NOP See No Operation.
O
Operation Code Structure A component of the
Command Descriptor Blocks that compose Byte
0 of both the 6-Byte and 10-Byte Command
Descriptor.
OPN Open.
Ordered Set Special types of transmission
words, either fill words or control words, that
have special meanings in a transmission.
Ordered sets include primitive signals, primitive
sequences, and frame delimiters.
Originated by Drive An action taken by the
recipient of either a Basic Link Service
Command, or an Extended Link Service
Command. These actions can be Allowable,
Invokable, Prohibited, or Required.
Originated by Initiator An action taken by the
initiator of either a Basic Link Service Command,
or an Extended Link Service Command. These
actions can be Allowable, Invokable, Prohibited,
or Required.
Outbound Fiber The fiber in a link used to
transmit information to a receiving port.
OX_ID Originator exchange identifier.
P
Parallel Transmission The transmission of bits
over multiple fibers, either copper or glass, all at
one time, and accomplished by dedicating each
fiber to transmitting one bit at a time. This high
speed transmission method is good for short
distances only. Contrast with serial transmission.
Payload The portion of the data field in a frame,
not part of the optional header data, that contains
the substantive information being transmitted
between ports in FC.
PDISC See Discover N_Port Parameters.
PLDA See Private loop direct attach.
PLOGI See N_Port Login.
Point-to-Point A topology in which exactly two
ports communicate. In FC, the two ports are
N_Ports.
Port A specific end-point for communications
within a host, or from a host to a peripheral
device or vice versa. In FC, it is an access point
in a device where a link attaches. Examples of
this port are N_Port, NL_Port, F_Port, and
FL_Port.
Port Addressing In FC, Port Addressing is
used for login validation, and includes the Port
Name, Node Name, and N_Port ID.
Port Name A 64-bit word consisting of the port
number, Company ID, Tape Drive Number, and
zeros.
Primitive Sequence A special type of ordered
set transmission word sent repeatedly by a port
until a proper response is received. The primitive
sequence signals specific conditions such as
online to offline, or link reset.
See Ordered Set.
Primitive Signals A type of ordered set that is
transmitted by a port, outside the confines of a
frame transmission, to do a specific function not
associated with transmitting data per se.
Examples are Idle and Receiver Ready
(R_RDY). A receiving port recognizes a primitive
signal when it is received as a single entity, not
grouped with other signals.
Private Loop An Arbitrated Loop that does not
contain a participating FL_Port but does contain
two or more NL_Ports.
Private Loop Direct Attach Defines a subset of
standards for operations of serial devices (tape
drives) on a private loop.
Private NL_Port An NL_Port that does not
attempt a Fabric Login.