Compaq 4200 User Manual page 81

host controller
hot-pluggable
I/O module
initiator
input/output module
JBOD
just a bunch of disks
LED
light emitting diode
low profile
low voltage differential
LVD
maintenance terminal
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.
An element that can be replaced without removing power from the
enclosure or interrupting the transfer of data over the SCSI bus. Compaq
disk drives are hot pluggable.
See also pluggable.
NOTE: The array controller must support this replacement method.
The enclosure element that is the interface to the host or controller. It may
include SCSI bus converter circuitry. I/O modules are bus specific (that is,
wide or narrow; SCSI, Ultra SCSI, or Ultra2 SCSI; single or dual bus; and
either single-ended or differential).
A SCSI device (usually a host system) that requests an operation to be
performed by another SCSI device (a target).
See I/O module.
Just a bunch of disks. A rack configuration composed of disk enclosures
without a controller enclosure.
See JBOD.
Light emitting diode. A diode that illuminates to define the status. The
standard states are O , O
N
See LED.
A storage device that's height is a maximum of 1.0 inches.
See LVD.
Low Voltage Differential. A bus in which the signal level is determined by
the potential difference between two wires.
The operator terminal used to identify an HS-family controller, to enable
its host paths, to define its subsystem configuration, and to check its
status. The HS-family maintenance terminal interface is designed to
accept any terminal conforming to EIA–423. The maintenance terminal is
only required to configure a storage subsystem and is not required for
normal operations.
, or F .
FF LASHING
Glossary–5