Compaq StorageWorks 2100 User Manual page 90

GL–4 Model 2100 and 2200 Ultra SCSI Controller Enclosures User Guide
Federal See FCC.
Communications
Commission
field replacement
See FRUTIL.
utility
FRUTIL Field replacement utility. Used to replace some elements within a controller
enclosure without shutting down the subsystem (in a dual redundant
configuration).
graphical user See GUI.
interface
GUI Graphical user interface. A graphical display presented on a monitor screen.
Ho
An EMU alphanumeric display SCSI target ID address representing "horn"
(Ho). From this address the audible alarm horn can be disabled (di) or enabled
(En).
See di and En.
host The primary or controlling computer (in a multiple computer network) to
which storage is attached.
host adapter A device that connects the host system I/O bus (for example, a PCI bus) to the
storage SCSI bus. A host adapter performs the lower layers of the SCSI
protocol and normally operates in the initiator role.
host computer
See host.
host controller
A device that connects the host system I/O bus (for example, a PCI bus) to the
storage SCSI bus. A host controller provides RAID functionality, typically has
multiple SCSI bus ports, performs the lower layers of the SCSI protocol, and
normally operates in the initiator role.
hot-pluggable A method of device replacement whereby the complete system remains online
and active during device removal or insertion. The device being removed or
inserted is the only device that cannot perform operations during this process.
See also pluggable.
I/O module Input/output module. A SCSI enclosure or storage enclosure device that
integrates a single-ended SCSI bus with either an 8-bit single-ended, 16-bit
single-ended, or 16-bit differential SCSI bus.