User's Guide

Glossary
316 Quantum DX-Series Software Interface Guide
request sense command Allows the host to receive sense data from the
DX-Series.
request volume element address command Reports the element
descriptors found by a Send Volume Tag command.
reserve command Reserves the specified DX-Series or elements for
exclusive use by the requesting initiator or another specified SCSI device.
rezero unit command Allows the host to home all DX-Series mechanisms.
RS-232 A serial communications cabling and protocol standard for nine-
pin connectors.
S
save data pointer message When data transfers are broken into multiple
connections, the DX-Series will send this SCSI-2 message before
disconnecting from the host.
SCSI Small Computer System Interface. A communications standard for
attaching peripheral equipment to small computers.
send diagnostic command Performs a self test on the DX-Series.