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101

SCSI Commands

5-216 Quantum DLT 8000 Tape System

5.28 SPACE Command (11h)

The SPACE command provides a variety of positioning functions that are determined by

Code and Count fields in the Command Descriptor Block. Both forward (toward End of

Medium/End of Partition) and reverse (toward Beginning of Medium/Beginning of

Partition) positioning are provided. Note that the DLT 8000 tape system is a single

partition device.

Bit

Byte

7 6 5 4 3 2 1 0

0 Operation Code (11h)

1 Logical Unit Number Reserved Code

2 - 4

(MSB)

Count

(LSB)

5 Unused Reserved Flag Link

Figure 5–99 SPACE Command Descriptor Block — Data Format

Table 5–99 SPACE Command Data — Field Descriptions

Field Name Description

Code The code can be one of the following:

Space Code Space by:

000b Blocks

001b Filemarks

010b Sequential Filemarks

011b End of Data

Count values can be from 0 to FFFFFFh.

1 2 ... 355 356 357 358 359 360 361 362 363 364 365 ... 407 408

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Quantum DLT 8000 Manual Página 360

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