SCSI Commands
5-110
Quantum DLT 8000 Tape System
MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)
Table 5–50 MODE SENSE Data Header — Field Descriptions
Field Name
Description
Mode Sense Data Length
This field specifies the length (in bytes) of the MODE SENSE data that
follows that is available to be transferred during the DATA IN phase.
Note that the Mode Sense Data Length does not include itself.
Media Type
The media type is determined by the drive and can be one of the
following:
Media Type
Description
00h
Unknown or not present
81h
Cleaning tape
83h
DLTtape III
84h
DLTtape IIIXT
85h
DLTtape IV
WP
Write Protect. If 0, this field indicates that the tape is write-enabled. If
set to 1, it indicates that the tape is write-protected.
Buffered Mode
This implements Immediate Reporting on WRITE commands via the
Buffered Mode.
If the field is 0, then the drive does not report a GOOD status on
WRITE commands until the data blocks are actually written to tape.
If the field is 1, then the drive reports GOOD status on WRITE
commands as soon as the data block has been transferred to the
buffer. This is the default configuration of the drive. Note that if
Buffered Mode is not used, the tape drive will suffer a degradation in
performance, but not in capacity.
Speed
The default setting = 0.
Tape system will attempt to match the drive’s
throughput with the host data throughput. Other available settings are:
1 = Bus Speed Below 5.0 MB/sec
2 = Bus Speed 5.0 – 6.0 MB/sec
3 = Bus Speed of 6.0 MB/sec or more
NOTE: This applies to DLT 8000 format only.
Block Descriptor Length
This field specifies the length (in bytes) of all of the block descriptors.
Since the drive only supports one block descriptor, this value is 08h.
Summary of Contents for DLTtape DLT 8000
Page 1: ...DLTTM 8000 Tape System Product Manual Nov 10 2003 81 60118 06...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued...
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Page 26: ...Table of Contents xxiv Quantum DLT 8000 Tape System...
Page 36: ...About This Manual Quantum DLT 8000 Tape System xxxii...
Page 54: ...General Description and Specifications 1 18 Quantum DLT 8000 Tape System...
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Page 376: ...Appendix A Definition of Vendor Unique Sense Data Information A 4 Quantum DLT 8000 Tape System...
Page 386: ...Appendix C Updating the Firmware C 6 Quantum DLT 8000 Tape System...
Page 396: ...Appendix E Visual Inspection Procedure for DLTtape Cartridges E 8 Quantum DLT 8000 Tape System...
Page 406: ...Appendix G DLT 7000 Emulation Feature G 8 Quantum DLT 8000 Tape System...
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