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SCSI Commands
5-78 Quantum DLT 8000 Tape System
MODE SELECT Command (6) / (10) (15h) / (55h) (continued)
Table 5–38 Mode Parameter Block Descriptor — Field Descriptions
Field Name Description
Density Code This field should match the current tape medium density; it is set to 0 if
the density is unknown.
Density
Code Description
00h Use default density
19h 62500 bpi, 64 track pairs, serial cartridge tape – 10.0 GB
(DLTtape III) / 15.0 GB (DLTtape IIIXT)
1Ah 81633 bpi, 64 track pairs, serial cartridge tape – 20.0 GB
(DLTtape IV)
1Bh 85937 bpi, 52 track quads, serial cartridge tape – 35.0 GB
(DLTtape IV)
41h 98250 bpi, 52 track quads, serial cartridge tape – 40.0 GB
(DLTtape IV)
The density codes above are the preferred codes used to define density.
Additionally, the codes listed below may be used, though use of the Data
Compression Page is preferred:
7Fh No change from previous density (No Operation)
80h 62500 bpi, 64 track pairs, serial cart.tape - 10.0 GB (DLTtape
III) / 15.0 GB (DLTtape IIIXT) without compression
81h 62500 bpi, 64 track pairs, serial cart.tape - 20.0 GB (DLTtape
III) / 30.0 GB (DLTtape IIIXT ) with compression
82h 81633 bpi, 64 track pairs, serial cart.tape - 20.0 GB (DLTtape
IV) without compression
83h 81633 bpi, 64 track pairs, serial cart.tape - 40 GB (DLTtape
IV) with compression
84h 85937 bpi, 52 track quads, serial cartridge tape - 35 GB
(DLTtape IV) without compression
85h 85937 bpi, 52 track quads, serial cartridge tape - 70 GB
(DLTtape IV) with compression
88h 98250 bpi, 52 track quads, serial cartridge tape - 40 GB
(DLTtape IV) without compression
89h 98250 bpi, 52 track quads, serial cartridge tape - 80 GB
(DLTtape IV) with compression
Number of Blocks This MODE SENSE field is sent = 0, indicating that all of the remaining
logical blocks on the tape will have the medium characteristics specified
by the block descriptor.
- 8000 Tape System 1
- Product Manual 1
- Table of Contents 10
- REVISION HISTORY 27
- Revision History 28
- Quantum DLT 8000 Tape System 28
- ABOUT THIS MANUAL 33
- CONVENTIONS 35
- FOR MORE INFORMATION 35
- READER COMMENTS 35
- About This Manual 36
- Chapter 1 37
- 1.3 SPECIFICATIONS 38
- 1.3.4 Reliability (Projected) 41
- 1.3.5 Physical Specifications 41
- 1.3.7 Operating Air Velocity 43
- 1.3.9 Altitude 45
- 1.3.10 Acoustic Emissions 46
- 1.3.12 Power Requirements 47
- 1.3.13 Current Requirements 48
- TAPE SYSTEM 55
- 2.2.1 Setting the SCSI ID 58
- 2.2.2 Setting TERM PWR 60
- Front Bezel 61
- 2.3.1 Selecting SCSI ID 71
- SCSI Connectors (2) 72
- 220 / 240 V 74
- AC Power Cord Connector 75
- 2.4 The Tape Cartridge 76
- 2.4.4 Loading a Cartridge 82
- 2.4.5 Unloading a Cartridge 84
- 2.5.1 Unload Button 88
- 2.5.3 Selecting Density 89
- 2.9 Troubleshooting 99
- SCSI DESCRIPTION 103
- 3.2 SCSI Commands 104
- SCSI Description 105
- 3.3 Signal States 107
- 3.4 SCSI Signals 109
- 3.4.2 Signal Bus Timing 110
- 3.5 SCSI Bus Phases 113
- Bus Free Sequence 114
- 3.5.2 ARBITRATION Phase 115
- Arbitration Sequence 115
- 3.5.3 SELECTION Phase 116
- Selection Sequence 116
- Selection Time-Out 117
- 3.5.4 RESELECTION Phase 117
- Reselection Sequence 117
- SCSI ID bit 118
- Reselection Time-Out 120
- 3.6 SCSI Bus Conditions 128
- 3.6.2 Reset Condition 129
- 3.6.3 Queued Unit Attentions 130
- Chapter 4 131
- MESSAGES 131
- Messages 132
- 4.2 Supported SCSI Messages 135
- 4.2.12 NO OPERATION (08h) 141
- SCSI COMMANDS 145
- SCSI Commands 146
- 5.1.1 SCSI Pointers 147
- 5.1.3 Status/Error Reporting 151
- (Continued) 153
- 5.3 ERASE Command (19h) 159
- 5.4 INQUIRY Command (12h) 161
- 5.6 LOCATE Command (2Bh) 179
- 5.7 LOG SELECT Command (4Ch) 181
- Page Code Page Description 183
- 02h Write Error Counter Page 183
- 03h Read Error Counter Page 183
- 32h Compression Ratio Page 183
- LOG PAGE HEADER 184
- LOG PARAMETERS 185
- (continued) 186
- 5.8 LOG SENSE Command (4Dh) 189
- Descriptions (continued) 196
- 5.8.5 TapeAlert Page (2Eh) 200
- TAPE ALERT LOG PAGE HEADER 200
- TAPE ALERT LOG PARAMETERS 201
- Descriptions 210
- 5.9.1 Mode Parameter List 217
- 5.9.8 TAPEALERT PAGE (1Ch) 237
- FORCEDENSITY parameter to 4 247
- 5.10.3 MODE SENSE Mode Pages 258
- Data Field Description 284
- 5.14 READ Command (08h) 304
- 5.16.2 Data Mode 311
- 5.16.3 Descriptor Mode 311
- 5.26 REWIND Command (01h) 353
- 5.28 SPACE Command (11h) 360
- 5.30 VERIFY Command (13h) 363
- 5.31 WRITE Command (0Ah) 364
- 5.32.2 Write Data Mode (010b) 368
- INFORMATION 373
- Appendix B 377
- B.2 Bugcheck Packets 378
- B.2.1 POST Failure Packets 379
- B.2.2 Event Log Packets 379
- UPDATING THE FIRMWARE 381
- 1. POST passed 383
- 2. The drive is unloaded 383
- THE LIBRARY PORT 387
- CARTRIDGES 389
- Cartridge 391
- SYSTEM SCSI COMMANDS 397
- DLT 7000 EMULATION FEATURE 399
- SCSI Bus Differences 403
- Front Panel Differences 405
- *81-60118-04 A01* 408
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