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SCSI Commands
5-88 Quantum DLT 4000 Tape Drive
MODE SELECT (6) / (10) Command (15h) / (55h) (continued)
Table 5–43 EEPROM Vendor Unique Page Parameters (continued)
Name Value
Rep.
Default Length
(Bytes)
Usage
REPBUSYINPROG ASCII
Binary
0 1 When set, report busy status if the drive is
in the process of becoming ready.
REPORTRCVDPERRS ASCII
Binary
1 1 To report recovered error if parity error
has been retried successfully, if set.
REPORTRCVRDERR ASCII
Binary
0 1 This parameter sets the default value of
PER bit of READ / WRITE Error Recovery
Mode page (01h).
REWINDONRESET ASCII
Binary
1 1 0 = Do not rewind on BUS RESET or BDR
message (CAUTION: May have partial
block data written to tape if reset occurs
during WRITE).
1 = Rewind the tape medium to BOT on
reset.
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.
SCSIINQVS ASCII
Binary
0 1 To return vendor unique inquiry string, if
set.
SCSIRDYEARLY ASCII
Binary
0 1 The drive reports READY status earlier, if
set.
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.
SCSIRESRELNOP ASCII
Binary
0 1 SCSI Reserve / Release Unit commands are
no operation, if set.
- DLT™4000 Tape Drive 1
- Product Manual 1
- TABLE OF CONTENTS 7
- REVISION HISTORY 19
- Revision History 20
- Quantum DLT 4000 Tape Drive 20
- ABOUT THIS MANUAL 21
- CONVENTIONS 23
- READER COMMENTS 23
- About This Manual 24
- Chapter 1 25
- Tabletop Version 1 26
- Tabletop Version 2 26
- 1.2 PRODUCT FEATURES 27
- 1.3 PRODUCT SPECIFICATIONS 27
- 1.3.2 Interface Type 28
- 1.3.3 Storage Capacity 28
- 1.3.4 Performance Data 28
- 1.3.6 Power Requirements 31
- 1.3.9 Reliability (Projected) 32
- Chapter 2 35
- HARDWARE IMPLEMENTATION 35
- 2.1.1 Safety Precautions 36
- 2.1.2 Handling 36
- 2.2 DRIVE SETUP 37
- Hardware Implementation 39
- SCSI ID Pushbutton 41
- 2.3 DRIVE INSTALLATION 42
- 2.4 DRIVE CONNECTIONS 44
- Pin Number Signal Name 48
- 1 +12 VDC 48
- 2 Ground (+12 V return) 48
- 3 Ground (+5 V return) 48
- 4 +5 VDC 48
- Table 2–5 LED Functionality 52
- 2.5.2 Selecting Density 56
- 2.6 POWER ON SELF TEST (POST) 58
- 2.7 TROUBLESHOOTING 60
- Chapter 3 63
- SCSI DESCRIPTION 63
- SCSI Description 64
- 3.3 SIGNAL STATES 66
- Table 3–2 Signal Sources 67
- 3.4 SCSI SIGNALS 68
- 3.4.2 Signal Bus Timing 69
- 3.5 SCSI BUS PHASES 72
- • DISCONNECT 73
- • COMMAND COMPLETE 73
- 3.5.3 SELECTION Phase 75
- The initiator: 76
- The drive: 76
- 3.5.4 RESELECTION Phase 77
- Table 3–6 Status Bytes 85
- 3.6 SCSI BUS CONDITIONS 86
- 3.6.2 Reset Condition 87
- 3.6.3 Queued Unit Attentions 88
- Chapter 4 89
- MESSAGES 89
- 4.2 SUPPORTED SCSI MESSAGES 93
- Messages 100
- Chapter 5 101
- SCSI COMMANDS 101
- SCSI Commands 102
- 5.1.1 SCSI Pointers 103
- 5.1.3 Status/Error Reporting 107
- 5.2 SCSI COMMAND DESCRIPTIONS 113
- 5.3 ERASE COMMAND (19H) 115
- 5.4 INQUIRY COMMAND (12H) 117
- 5.6 LOCATE COMMAND (2BH) 130
- 5.7 LOG SELECT COMMAND (4CH) 132
- 5.7.2 Operation of LOG SELECT 134
- 5.8 LOG SENSE COMMAND (4DH) 139
- • A page is not supported 142
- • The SP bit is set to 1 142
- • PPC bit is set to 1 142
- (continued) 146
- 0000h – 000Fh) 156
- 0000h, 0001h, or 0002h) 159
- 5.9.1 Mode Parameter List 163
- 5.10.3 MODE SENSE Mode Pages 199
- Data Format 215
- 5.12 READ COMMAND (08H) 217
- 5.14.2 Data Mode 224
- 5.14.3 Descriptor Mode 224
- • A hard reset occurs 245
- 5.23 SPACE COMMAND (11H) 252
- 5.25 VERIFY COMMAND (13H) 255
- 5.26 WRITE COMMAND (0AH) 257
- 5.27.2 Write Data Mode (010b) 260
- Appendix A 265
- INFORMATION 265
- Appendix B 269
- B.2.1 POST Failure Packets 270
- B.2.2 Event Log Packets 271
- Appendix C 275
- UPDATING THE FIRMWARE 275
- • Examines the data 277
- Appendix D 281
- THE TAPE CARTRIDGE 281
- Reel Lock Opening 284
- Spring-Loaded Hub 285
- WRITE-PROTECTION 288
- D.4 LOADING A TAPE CARTRIDGE 290
- *81-60043-04 A01* 300
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