Q-Logic FC HBA CLI manual SAN Storage Area Network

SANsurfer FC HBA CLI User’s Guide

Command Line Interface for QLogic Fibre Channel Host Bus Adapters

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„N_Port (Node Port)—an FC port that supports point-to-point topology.

„NL_Port (Node Loop Port)—an FC port that supports loop topology.

„F_Port (Fabric Port)—a port in a fabric where an N_Port can attach.

„FL_Port (Fabric Loop Port)—a port in a fabric where an NL_Port can attach.

port instance

The number of the port in the system. Each HBA may have one or multiple ports, identified with regard to the HBA as port 0, port 1 and so forth. to avoid confusion when dealing with a system containing numerous ports, each port is assigned a port instance number when the system boots up. So Port 0 on an HBA might have a port instance number of, for example, 8 if it is the eighth port discovered by the system.

SAN (Storage Area Network)

Multiple storage units (disk drives) and servers connected by networking topology.

SCSI (Small Computer System Interface)

Ahigh-speed interface used to connect devices, such as hard drives, CD drives, printers, and scanners, to a computer. The SCSI can connect many devices using a single controller. Each device is accessed by an individual identification number on the SCSI controller bus.

target

The storage-device endpoint of a SCSI session. Initiators request data from targets. Targets are typically disk-drives, tape-drives, or other media devices. Typically a SCSI peripheral device is the target but an HBA may, in some cases, be a target. A target can contain many LUNs.

A target is a device that responds to a requested by an initiator (the host system). Peripherals are targets, but for some commands (for example, a SCSI COPY command), the peripheral may act as an initiator

target binding

The process in which the HBA driver binds a target ID using a target’s world wide port name (WWPN) or port ID. This enables the target ID to always connect to the WWPN or port ID across reboots regard- less of SAN reconfigurations.

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