Adaptec 412R User Guide - Page 197

Glossary fibre channel A high-performance connection standard designed for bidirectional, serial data communication. FC provides longdistance connectivity and high bandwidth for efficiently moving large data files. H HBA (host bus adapter) An HBA is the critical link between a host server or workstation and a subsystem, integrating computing platforms, OSs, and I/O protocols to ensure proper interoperability and functionality. The bus adapter provides direct storage connectivity from the system to data within the subsystem and enables stable, high-speed transmission of information and files. HBAs manage the controllerspecific aspects of handling a storage driver interface device implemented as a target driver, which supports mass storage peripheral devices such as disks and tapes. A storage driver interface is used to implement SCSI and other storage device drivers. An HBA connects the storage subsystem to the host computer and uses either fiber or copper media. hot-swapping Removing a component from a system and installing a new component while the power is on, the system is running, and without pausing I/O. K kill In active-active mode, one controller can kill the other controller by resetting it and taking it offline. L LUN (logical unit number) The number assigned to a subdevice (logical unit) of a SCSI device. Each SCSI device can contain up to eight subdevices numbered 0 through 7; however, most SCSI devices contain only one subdevice (LUN 0). Glossary-3