Reference Guide

Chapter 4 SCSI Commands
REPORT DENSITY SUPPORT Command (44h)
DLT-S4 Interface Reference Guide 286
DUP Duplicated. When is set to 0, indicates that this Primary Density Code has
exactly one density support data block.
When set to 1, indicates that this Primary Density Code is specified in more
than one density support data block.
Deflt Default. When set to 0, indicates that this is not the default density of the drive.
If neither the Primary nor Secondary Density Code fields are set to 0 and this bit
is set to 1, the drive accepts a
MODE SELECT header with a density code of 00h
as equivalent to the Primary and Secondary Density Codes.
The default density of the drive may vary depending on the currently mounted
media. Multiple codes may return a Deflt bit of 1 when the Media field is set to
0 since more than one default may be possible.
Bit Per MM Indicates the number of bits per millimeter per track as recorded on the tape
medium.
Media Width Indicates the width of the tape medium supported by this density. This field is
expressed in units of tenths of millimeters.
Tracks Indicates the number of data tracks supported on the medium by this density.
Capacity If the Media bit is set to 0, the Capacity field indicates the approximate capacity
of the longest supported medium. If the Media bit is set to 1, the Capacity field
indicates the approximate capacity of the current medium. The capacity
assumes that compression is disabled. The capacity also assumes that the media
is in good condition and that normal data and block sizes are used. The value is
given in units of megabytes (1,048,576 bytes). Note that the drive does not
guarantee that this space is actually available in all cases.
The Capacity field is intended to be used by the client to determine that the
correct density is being used, especially when a lower density format is
required.
Assigning
Organization
Contains 8 bytes of ASCII data identifying the organization responsible for the
specifications that define the values in the density support data block.
Density Name Contains 8 bytes of ASCII data identifying the document associated with this
density support data block.
Description Contains 20 bytes of ASCII data describing the density.
Field Description