DEC AlphaServer 1000A Owner's Manual page 203

Digital UNIX operating system
A general-purpose operating system based on the Open Software Foundation OSF/1
2.0 technology. Formerly called DEC OSF/1, V3.0 runs on the range of
AlphaGeneration systems, from workstations to servers.
diagnostic program
A program that is used to find and correct problems with a computer system.
direct memory access (DMA)
Access to memory by an I/O device that does not require processor intervention.
DSSI
Digital's proprietary data bus that uses the System Communication Architecture
(SCA) protocols for direct host-to-storage communications.
DSSI cluster
A cluster system that uses the DSSI bus as the interconnect between DSSI disks and
systems.
DUP server
Diagnostic Utility Program server. A firmware program on-board DSSI device that
allows a user to set host to a specified device in order to run internal tests or modify
device parameters.
ECC
Error Correction Code. Code and algorithms used by logic to facilitate error
detection and correction.
EISA bus
Extended Industry Standard Architecture bus. A 32-bit industry-standard I/O bus
used primarily in high-end PCs and servers.
AlphaServer 1000A Owner's Guide Glossary of Terms 5