Glossary-3
Glossary
fibre channel
A high-performance connection standard designed for
bidirectional, serial data communication. FC provides long-
distance 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 controller-
specific 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).
DuraStor IUG - Online.book Page 3 Friday, July 19, 2002 3:06 PM
