Monday, December 27, 2010
Weak current College】 【SAN special terminology details (5)】.
MTBF (mean failure)
Multicast (multicast): a restricted radio, send information to a set of network N_Port port.
Multimode (multi-mode fiber): a optical fibre specification that allows the transmission distance between devices up to 500 meters.
NameServer/Service (multi-mode fiber): a optical fibre specification that allows the transmission distance between devices up to 500 meters.
NAS (network storage device): a connection to the controller of disk array, the controller access to a local area network.
NDMP (network data management protocol), used for tape backup without the need to consume server resources.
NIC (network interface card)
NL_Port (node loop port): supports arbitrated loop protocol port.
Node (node): Fibre Channel devices that support one or more ports.
Nodename (node name): a assigned to fibre channel nodes is 64-bit identifiers.
Non-OFC a laser transmitter, due to its low intensity without open fibre control.
NonparticipatingMode (multiple join mode): when the access to the loop device more than 127, so could not obtain the physical address is arbitrated loop, it will turn into this mode.
NOS (no primitives sequence): a primitive sequence in two N_Port port (point-to-point topology) or a N_Port port and an F_Port port (schema topology) link initialization process. The primitive sequence indicates that the send port has detected link failure or receive drop is not in the loop.
N_Port (N_Port port): the schema or point-to-point connection in the Fibre Channel ports.
OFC (open architecture control): a way to allow or prevent high intensity laser transceivers laser signal.
OLS (offline primitive sequence): a primitive sequence in two N_Port port (point-to-point topology) or a N_Port port and an F_Port port (schema topology) link initialization process. The primitive sequence indicates that the send port is trying to initiate a link, the identified NOS primitives sequence or is offline. The expected response to link restart primitives (LR).
OLTP (online transaction process)
Operation (operation): a term that refers to the establishment of FC-2 chunks.
OPN (connection establishment primitive signal): only for arbitrated loop, by arbitration process L_Port port construction and sent to other ports in the loop.
Orderedset (ordered set): a set of low-level protocol, on the frame transmission, initialization and media access, and to distinguish between fibre channel in the control of information and data.
Originator (initiator): start dialogue N_Port port
Out-of-band (band): in fibre channel networks (usually Ethernet) management protocol information transmission.
OX_ID (the initiator of the conversation identifier): data frame frame header of a two-byte field used to indicate the frame belongs.
Parallel (parallel): multiple lines at the same time transmit the data bits.
ParticipatingMode (join mode): L_Port port's normal operating mode, obtain L_Port port arbitrated loop physical address when working in this mode.
PBC (port bypass circuit): hub or disk device in a circuit that is used to open or close a loop to add or remove nodes.
PLDA (private loop direct connection): a logic loops.
PLOGI a port to port the login process. Through this process, the initiator and target conversation.
PointtoPoint (point-to-point): two devices dedicated fibre channel connections.
Port (port): a optical fibre channel portal for node connected to the network.
PortLog (port log): switch all activities of a record.
PortLogDump (port log viewer): a read port log command to view the events in the switch.
Portname (port): the one assigned to the Fibre Channel ports 64 bit identifier
POST (power on self test): switch to check the part of the routine.
Primitivesequence (SL series): a sequence of bits set that is used to indicate or start the network media transformation of the State, require at least sent three times consecutively, receiving just will make the answer.
Primitivesignals (primitive signal): a sequence of bits set that is used to indicate the activities or events. Simply send once, someone will respond. Idle (Idle) and ready (R_RDY) for all three topologies (ARB, OPN and CLS), MRK is used only for arbitrated loop.
Privatedevice (special equipment): support for loops, recognizable 8-bit address, but you cannot log on to the schema.
Privateloop (private loop): not connected to the schema of the arbitrated loop.
Privateloopdevice (private loop device): not connected to the structure of the arbitrated loop device, PrivateNL_Port (dedicated NL_Port port): public or private loop in a port, only with NL_Port loops other ports to communicate, and to communicate between the schema.