Glossary
Glossary- 4 AlphaServer 1000 Rackmount Owner's Guide
DEC OSF/1 operating system
A general-purpose operating system based on the Open Software Foundation OSF/1 2.0
technology. DEC OSF/1 V2.0 runs on the range of AlphaGeneration systems, from
workstations to servers.
DEC VET
Digital Verifier and Exerciser Tool. A multipurpose system diagnostic tool that performs
exerciser-oriented maintenance testing.
DECchip 21064 processor
The CMOS, single-chip processor based on the Alpha architecture and used on many
AlphaGeneration computers.
diagnostic program
A program that finds and corrects 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.
