The American National Standard for information systems -- Small
Computer System Interface-2 (SCSI-2) specification defines mechanical,
electrical, and functional requirements for connecting small computers
to a wide variety of intelligent devices, such as rigid disks, flexible
disks, magnetic tape devices, printers, optical disks, and scanners.
It specifies standard electrical bus signals, timing, and protocol,
as well as a standard packet interface for sending commands to devices
on the SCSI bus.
Certain OpenVMS systems employ the SCSI bus as an I/O bus.
For these systems, HP offers SCSI-compliant disk and tape drives,
such as the RZ55 300 MB read/write disk, the RRD40 600 MB compact
disk, and the TZK50 95 MB streaming tape drive. The operating system
also allows devices including disk drives, tape drives, and scanners,
supplied by sources other than HP, to be connected to the SCSI bus
of such a system.
SCSI has been widely adopted by manufacturers for a variety
of peripheral devices; however, because the ANSI SCSI standard is
broad in scope, not all devices that implement its specifications
can fully interrelate on the bus. HP fully supports SCSI-compliant
equipment sold or supplied by HP. Proper operation of products not
sold or supplied by HP cannot be assured.
For more information, refer to the following documents:
American National Standard for Information
Systems -- Small Computer System Interface-2 (SCSI-2) specification
(X3T9.2/86-109) Copies of this document can be purchased from: Global Engineering
Documents, 2805 McGaw, Irvine, California 92714, United States;
or (800) 854-7179 or (714) 261-1455. Please refer to document X3.131-198X.
American National Standard for Information Systems -- Small
Computer System Interface specification (X3.131-1986) Copies of this document can be obtained from: American National
Standards Institute, Inc., 1430 Broadway, New York, New York, 10018.
This document is now known as the SCSI-1 standard.
HP publishes two additional documents to help third-party
vendors prepare SCSI peripherals and peripheral software for use
with DIGITAL workstations.
The Small Computer System
Interface: An Overview (EK-SCSISOV-001) provides a general
description of the DIGITAL SCSI third-party support program.
The Small Computer System Interface: A
Developer's Guide (EK-SCSIS-SP-001) presents the details
of implementation of SCSI within DIGITAL operating systems.