Adaptec 2074700-R User Guide - Page 22

Using CD-ROMs, DATs, Tapes, etc.

Page 22 highlights

Introduction 1.4.1 Using CD-ROMs, DATs, Tapes, etc. A SCSI device that is not a SCSI hard disk or a removable hard disk, or that does not behave like one, is called a Non-Direct Access Device. Such a device is not configured with ICPCON and does not become a logical drive or host drive. SCSI devices of this kind are either operated through the Advanced SCSI programming Interface (ASPI) (MSDOS or Novell NetWare), or are directly accessed from the operating system (UNIX). Note: Hard disks and removable hard disks are called Direct Access Devices. However, there are some Non-Direct Access Devices, for example, certain MO drives, which can be operated just like removable hard disks if they have been appropriately configured (for example, by changing their jumper settings). 22 Software Installation and User's Guide

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22
Software Installation and User’s Guide
Introduction
1.4.1
Using CD-ROMs, DATs, Tapes, etc.
A SCSI device that is not a SCSI hard disk or a removable hard disk, or that does not
behave like one, is called a
Non-Direct Access Device
. Such a device is
not configured
with
ICPCON
and does not become a logical drive or host drive
. SCSI devices of this
kind are either operated through the Advanced SCSI programming Interface (ASPI)
(MSDOS or Novell NetWare), or are directly accessed from the operating system
(UNIX).
Note:
Hard disks and removable hard disks are called
Direct Access Devices
. However, there are
some Non-Direct Access Devices, for example, certain MO drives, which can be operated
just like removable hard disks if they have been appropriately configured (for example, by
changing their jumper settings).