Quantum 1200 Series DAT Autochanger Betriebsanweisung PDF herunterladen (Seite 244)

REPORT DENSITY SUPPORT Command (44h) SDLT 600 SCSI Interface Guide

4-202 January 2005 81-81200-02 REV A01

Table 4-118. REPORT DENSITY SUPPORT Data Block Descriptor —

Field Descriptions

Field Name Description

Primary

Density Code

Contains the value returned by a MODE SENSE command for the density

described in the remainder of the Density Support Data Block Descriptor.

Secondary

Density Code

When multiple density code values are assigned to the same recording

technology, this field lists the equivalent density code value. If no secondary

density code exists, the drive returns the primary device code value in this

field.

WrtOK Write OK. When set to 0, indicates that the drive does not support writing to

the media at this density.

When set to 1, indicates that the drive is capable of writing at this density to

either the currently mounted medium, if the Media bit in the Command Block

Descriptor is set to 1, or to any media, if the Media bit in the Command Block

Descriptor is set to 0. Note that all density code values the REPORT

DENSITY SUPPORT command returns are supported for READ operations.

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 either the Primary Density Code or the Secondary Density Code fields are

set to 0, this bit is set to 1. 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. Note that the value is rounded up if the fractional value of the actual

value is greater than or equal to 0.5. A value of 00h indicates that the number

of bits per millimeter does not apply to the drive.

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.

1 2 ... 239 240 241 242 243 244 245 246 247 248 249 ... 293 294

Kommentare zu diesen Handbüchern

Keine Kommentare

Quantum 1200 Series DAT Autochanger Betriebsanweisung Seite 244

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Software Quantum 1200 Series DAT Autochanger