Quantum DLT-S4 Guide de l'utilisateur télécharger pdf (Page 317)

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Chapter 4 SCSI Commands

REPORT DENSITY SUPPORT Command (44h)

DLT-S4 Interface Reference Guide 283

Table 156 REPORT DENSITY

SUPPORT Command — Field

Descriptions

Report Density Support 4 Figure 143 illustrates the REPORT DENSITY SUPPORT header.

Figure 143 REPORT DENSITY

SUPPORT Header — Data

Format

Table 157 provides a description of the fields in the REPORT DENSITY

SUPPORT

header.

Field Description

Media When set to 0, the drive returns density support data blocks for the densities of any

supported medium. When set to 1, the drive returns density support data blocks for the

densities supported by the mounted medium only.

Medium Type When set to 0, the drive returns a

REPORT DENSITY SUPPORT header followed by one or

more Density Report descriptors as shown in figure 143

. When set to 1, the drive returns

REPORT DENSITY SUPPORT header followed by one or more Medium Type descriptors

are shown in figure 145

Allocation

Length

Specifies the maximum number of data bytes that the drive is allowed to return.

Bit

7 6 5 4 3 2 1 0

Byte

0 — 1

(MSB)

Available Density Support Length

(LSB)

2 — 3 Reserved

4 — n Density Support or Medium Type Descriptor(s)

1 2 ... 312 313 314 315 316 317 318 319 320 321 322 ... 385 386

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Quantum DLT-S4 Guide de l'utilisateur Page 317

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