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SCSI Commands
5-100 Quantum DLT 8000 Tape System
MODE SELECT Command (6) / (10) (15h) / (55h) (continued)
Table 5–47 EEPROM Vendor Unique Page Parameters (continued)
Name Value Rep. Default
Length
(Bytes) Usage
SCSIBUSDMATIMER
ASCII Decimal
2 1 The number of seconds until the drive
times out waiting for ACK once DMA
transfer started. When set to 0, the
timer is set to infinite.
SCSIRESELRETRIES
ASCII Decimal
10 1 The number of reselection retries the
drive makes before giving up. Each
reselection retry occurs every 1 second.
When set to 0, the drive does infinite
reselection retries.
SCSIRDYEARLY
ASCII Binary
0 1 The drive reports READY status earlier
(if set).
REPORTRCVRDERR
ASCII Binary
0 1 This parameter sets the default value of
PER bit of READ / WRITE Error Recovery
Mode page (01h).
NORDYUAONUNLD
ASCII Binary
0 1 When set, Not Ready to Ready Transition
unit attention will be removed from the
unit attention queue upon a successful
unload.
HOSTCOMPSETTING
ASCII Decimal
0 1 This parameter allows the host to
change the compression setting. Note
that there is a tradeoff between best
performance and best compression; if
the compression setting = 1, it provides
the best performance but the worst
level of compression. If the setting = 15,
it provides lowest performance but
maximum compression. Settings for the
HOSTCOMPSETTING parameter are:
0 Use default compression setting
1 Set compression setting for best
performance
2 Set compression setting for best
compromise of performance and
compression
3 Set compression setting for best
compression
NOTE: This information for DLT 8000
format only
REDUNDANCYMODE
ASCII Decimal
0 1 Sets the value of the allowed maximum
marginal channel (0 - 1 allowed).
REPBUSYINPROG
ASCII Binary
0 1 When set, report busy status if the drive
is in the process of becoming ready.
- 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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