HP StorageWorks HSG80 ACS Solution Software V8.8 for Windows NT, Windows 2000, and Windows Server 2003 (32-bit) Installation and Configuration Guide (AA-RV1XA-TE, March 2005)

Glossary
275HSG80 ACS Solution Software V8.8 for Windows NT, Windows 2000, and Windows Server
2003 (32-bit) Installation and Configuration Guide
DOC DWZZA-On-a-Chip. ASCSI bus extender chip used to connect a SCSI
bus in an expansion cabinet to the corresponding SCSI bus in another
cabinet (See DWZZA).
driver A hardware device or a program that controls or regulates another
device. For example, a device driver is a driver developed for a specific
device that allows a computer to operate with the device, such as a
printer or a disk drive.
dual-redundant
configuration
A controller configuration consisting of two active controllers
operating as a single controller. If one controller fails, the other
controller assumes control of the failing controller devices.
dual-simplex A communications protocol that allows simultaneous transmission in
both directions in a link, usually with no flow control.
DUART Dual universal asynchronous receiver and transmitter. An integrated
circuit containing two serial, asynchronous transceiver circuits.
DWZZA A StorageWorks SCSI bus signal converter used to connect 8-bit
single-ended devices to hosts with 16-bit differential SCSI adapters.
This converter extends the range of a single-ended SCSI cable to the
limit of a differential SCSI cable.
DWZZB A StorageWorks SCSI bus signal converter used to connect a variety of
16-bit single-ended devices to hosts with 16-bit differential SCSI
adapters.
ECB External cache battery. The unit that supplies backup power to the
cache module in the event the primary power source fails or is
interrupted.
ECC Error checking and correction.
EDC Error detection code.
EIA The abbreviation for Electronic Industries Association. EIA is a
standards organization specializing in the electrical and functional
characteristics of interface equipment.
EMU Environmental monitoring unit. A unit that provides increased
protection against catastrophic failures. Some subsystem enclosures
include an EMU which works with the controller to detect conditions
such as failed power supplies, failed blowers, elevated temperatures,
and external air sense faults. The EMU also controls certain cabinet
hardware including DOC chips, alarms, and fan speeds.