Quantum SDLT 320 Manual de usuario Pagina 38
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CHAPTER 3: Drive Specifications SDLT 220 and SDLT 320 Product Manual
3-4 March 2004 81-85002-01
3.1.6 Maximum Data Transfer Rate
The maximum sustained (and burst) data transfer rates for SDLT drives are shown in
Table 3-4.
NOTE: Cable lengths and cable type can limit attainable transfer
rate; for details, refer to a separate document,
SDLT 220 and SDLT 320 Design and Integration Guide,
81-81148-01.
3.1.7 Head Life and MTBF
Mean time between failures (MTBF) for the overall tape system is projected to be
250,000 hours, not including the heads. Head life is a minimum of 30,000 tape
motion hours and an average of 50,000 tape motion hours.
Table 3-4. Maximum Data Transfer Rates
SDLT 220
Sustained
SDLT 220
Burst
Max*
SDLT 320
Sustained
SDLT 320
Burst
Max*
Config-
uration
Native
Com-
pressed‡ Native
Com-
pressed‡
HVD
(Ultra 1
SCSI)
Narrow 11 MB/sec 20 MB/sec 20 MB/sec 16 MB/sec 20 MB/sec 20 MB/sec
Wide 11 MB/sec 22 MB/sec 40 MB/sec 16 MB/sec 32 MB/sec 40 MB/sec
LVD
(Ultra 2
SCSI)
Narrow 11 MB/sec 22 MB/sec 40 MB/sec 16 MB/sec 32 MB/sec 40 MB/sec
Wide 11 MB/sec 22 MB/sec 80 MB/sec 16 MB/sec 32 MB/sec 80 MB/sec
* Burst speeds are limited by the SCSI bus itself, not the design of SDLT 220/320 or Super DLTtape media.
‡ The compression rates shown assume an industry standard 2:1 compression ratio. Actual compression ratios
achieved depend on the redundancy of data files being recorded. For non-compressible (expanding) data, this
results in a reduction in capacity and transfer rate for the data. Fully random data is the worst case for
compressibility.
- 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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