Space Command (11H) - Quantum DLT 8000 Product Manual

Quantum dlt 8000: user guide
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SCSI Commands

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
7
Byte
0
1
Logical Unit Number
(MSB)
2 - 4
5
Unused
Figure 5–99 SPACE Command Descriptor Block — Data Format
Table 5–99 SPACE Command Data — Field Descriptions
Field Name
Code
5-216
6
5
Operation Code (11h)
Description
The code can be one of the following:
Space Code
000b
001b
010b
011b
Count values can be from 0 to FFFFFFh.
Quantum DLT 8000 Tape System
4
3
Reserved
Count
Reserved
Space by:
Blocks
Filemarks
Sequential Filemarks
End of Data
2
1
Code
Flag
Link
0
(LSB)

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