Quantum DLT-S4 Podręcznik Użytkownika Pobierz pdf (Strona 319)

100

101

Chapter 4 SCSI Commands

REPORT DENSITY SUPPORT Command (44h)

DLT-S4 Interface Reference Guide 285

Table 158 DENSITY

SUPPORT Descriptor — Field

Descriptions

10 — 11

(MSB)

Tracks

(LSB)

12 — 15

(MSB)

Capacity

(LSB)

16 — 23

(MSB)

Assigning Organization

(LSB)

24 — 31

(MSB)

Density Name

(LSB)

32 — 51

(MSB)

Description

(LSB)

Field 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.

Bit

7 6 5 4 3 2 1 0

Byte

1 2 ... 314 315 316 317 318 319 320 321 322 323 324 ... 385 386

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