Quantum SDLT 320 User Manual Page 25
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SDLT 220 and SDLT 320 Product Manual CHAPTER 2: SDLT 220/320 Product Information
81-85002-01 March 2004 2-5
2.3.4 Advanced Partial Response Maximum
Likelihood
Improving on Partial Response Maximum Likelihood (PRML) technology
traditionally used in disk drives and communication systems, Quantum’s advanced
PRML channel technology was co-developed with Lucent Technologies to bring
new levels of performance and capacity to high-performance linear tape products.
This provides high-encoding efficiency recording densities for greater capacity
and performance that enables SDLT to substantially increase transfer rates and
capacity.
2.3.5 Advanced Metal Powder Media
Advanced Metal Powder (AMP) media is a state-of-the-art media using durable
metal powder technology for recording very high densities of data. The back side
of the AMP media receives a specially formulated coating to accept the optical
servo tracks. Because the servo information is on the back side of the media, the
entire data-bearing side of the media is available for recording data and eliminate
the need for pre-formatting. In addition, AMP media has been designed to meet the
needs of multiple generations of the SDLT technology.
2.3.6 Positive Engagement
Positive engagement is a highly robust tape leader-buckling mechanism that
increases cartridge life and supports the heavy duty-cycle environments found in
high-end and automation environments.
This mechanism engages the tape leaders upon cartridge load and disengages them
upon cartridge unload. It uses a solid metal pin that is attached to the drive leader
to link with molded clips that are permanently attached to the tape leader inside the
cartridge. The Positive Leader Link design makes the buckling of Super DLTtape I
media a totally reliable mechanical process.
In addition to supporting Super DLTtape I data cartridges, the buckling mechanism
also supports existing DLTtape IV data cartridges to ensure complete backward-
read compatibility.
- Copyright 2
- Trademarks 2
- Legal Disclaimers 2
- Contact Information 2
- Revision History 3
- 81-85002-01 March 2004 5
- Table of Contents 7
- 81-85002-01 March 2004 ix 9
- Glossary G-1 11
- List of Tables 13
- List of Figures 15
- Introduction 17
- 1.3 Related Documents 18
- 1.4 Structure of this Manual 18
- 1.5 Conventions 19
- 1.6 For More Information 19
- 1.7 Reader Comments 20
- SDLT 220/320 Product 21
- Information 21
- 2-2 March 2004 81-85002-01 22
- 2.3 SDLT 220/320 Technology 23
- 2.3.2 Pivoting Optical Servo 24
- Likelihood 25
- 2.3.6 Positive Engagement 25
- 2-6 March 2004 81-85002-01 26
- 2.4.1 Data Control Module 27
- 2.4.2 Tape Control Module 28
- 2.4.3 Front Panel Module 29
- 2-10 March 2004 81-85002-01 30
- Features 31
- 2.6 Quantum Diagnostics Tools 32
- 2.7 TapeAlert 33
- 2-14 March 2004 81-85002-01 34
- Drive Specifications 35
- 3.1.1 Interface Type 36
- 3.1.2 Physical Dimensions 36
- 3.1.3 Storage Capacity 37
- 3.1.4 Compression 37
- 3.1.5 Data Integrity 37
- 3.1.7 Head Life and MTBF 38
- 3.1.8 Media Durability 39
- 3.2 Functional Specifications 40
- Feature SDLT 220 SDLT 320 41
- 3-8 March 2004 81-85002-01 42
- 81-85002-01 March 2004 3-9 43
- Pulse Shape 44
- Vibration 44
- 81-85002-01 March 2004 3-11 45
- 3-12 March 2004 81-85002-01 46
- 3.3.1 Air Flow Requirements 47
- 3.3.3 Storage and Shipment 48
- 3.3.4 Altitude 49
- 3-16 March 2004 81-85002-01 50
- 81-85002-01 March 2004 3-17 51
- 3-18 March 2004 81-85002-01 52
- Installing Your Tape Drive 53
- 4.1.1 Safety Precautions 54
- 4.1.2 Handling 55
- 4-4 March 2004 81-85002-01 56
- 81-85002-01 March 2004 4-5 57
- Tape Drive 58
- 81-85002-01 March 2004 4-7 59
- SCSI ID0123 60
- SCSI ID 4 5 (default) 6 7 60
- SCSI ID891011 60
- SCSI ID 12 13 14 15 60
- Denotes Pin 1 orientation 61
- SCSI ID Jumper Across Pins: 62
- 9-10* 7-8 5-6 3-4 1-2 62
- 81-85002-01 March 2004 4-11 63
- 4-12 March 2004 81-85002-01 64
- 81-85002-01 March 2004 4-13 65
- 4-14 March 2004 81-85002-01 66
- 81-85002-01 March 2004 4-15 67
- 4-16 March 2004 81-85002-01 68
- 81-85002-01 March 2004 4-17 69
- 4-18 March 2004 81-85002-01 70
- 81-85002-01 March 2004 4-19 71
- Pin Number Signal Name 72
- 4.4.1 Configuring the Drive 73
- SCSI Cables 74
- AC Power Cable 75
- 4-24 March 2004 81-85002-01 76
- Using Your Tape Drive 77
- 5.1 Power On Self Test 78
- 81-85002-01 March 2004 5-3 79
- 5.3 Updating the Firmware 80
- 5.3.2 Making a FUP/CUP Tape 81
- 5.3.3 Using a CUP/FUP Tape 81
- • Updating the same revision 82
- 81-85002-01 March 2004 5-7 83
- 5-8 March 2004 81-85002-01 84
- 81-85002-01 March 2004 5-9 85
- DLTtape IV [includes DLT 1 86
- (Benchmark)] 86
- SDLT 220 87
- SDLT 320 87
- • The tape is moving 88
- 5.6 Density Selection 89
- 5-14 March 2004 81-85002-01 90
- 81-85002-01 March 2004 5-15 91
- 5-16 March 2004 81-85002-01 92
- 5.7 Troubleshooting 93
- 5-18 March 2004 81-85002-01 94
- 81-85002-01 March 2004 5-19 95
- 5-20 March 2004 81-85002-01 96
- SCSI Description 97
- 6-2 March 2004 81-85002-01 98
- 6.2 SCSI-2 Commands 99
- 6-4 March 2004 81-85002-01 100
- 6.3 SCSI-3 Commands 101
- 6.4 Parity 102
- 6.5 Signal States 102
- 81-85002-01 March 2004 6-7 103
- 6.6 SCSI Signals 104
- Signal Definition 105
- 6.6.2 Signal Bus Timing 106
- 1. Recommended time 107
- 6-12 March 2004 81-85002-01 108
- Regulatory Compliance 109
- 7.1.2 Safety Requirements 110
- 7.2.3 Conducted Emissions 111
- 7.2.4 Radiated Emissions 112
- Type Specifications Comments 113
- 7.3 Acoustic Noise Emissions 114
- Super DLTtape I 115
- Data Cartridge 115
- Super DLTtape Data Cartridges 116
- 81-85002-01 March 2004 A-3 117
- A-4 March 2004 81-85002-01 118
- 81-85002-01 March 2004 A-5 119
- A-6 March 2004 81-85002-01 120
- 81-85002-01 March 2004 A-7 121
- A-8 March 2004 81-85002-01 122
- 81-85002-01 March 2004 A-9 123
- A.5 Loading a Data Cartridge 124
- DLTtape I Data Cartridges 125
- A-12 March 2004 81-85002-01 126
- DLTtape IV Data 127
- Cartridge 127
- B-2 March 2004 81-85002-01 128
- 81-85002-01 March 2004 B-3 129
- B-4 March 2004 81-85002-01 130
- 81-85002-01 March 2004 B-5 131
- B-6 March 2004 81-85002-01 132
- 81-85002-01 March 2004 B-7 133
- B.4 Loading a Data Cartridge 134
- 81-85002-01 March 2004 B-9 135
- B-10 March 2004 81-85002-01 136
- Glossary 137
- G-2 March 2004 81-85002-01 138
- 81-85002-01 March 2004 G-3 139
- G-4 March 2004 81-85002-01 140
- 81-85002-01 March 2004 G-5 141
- G-6 March 2004 81-85002-01 142
- 81-85002-01 March 2004 G-7 143
- G-8 March 2004 81-85002-01 144
- 81-85002-01 March 2004 G-9 145
- G-10 March 2004 81-85002-01 146
- 81-85002-01 March 2004 G-11 147
- G-12 March 2004 81-85002-01 148
- 81-85002-01 A04 150
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