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SDLT 220 and SDLT 320 Design & Integration Guide CHAPTER 2: General Drive Specifications
81-81148-01 March 2004 2-15
2.6.4 Maximum Data Transfer Rate
The maximum sustained (and burst) data transfer rates for SDLT drives are shown
in Table 2-8.
NOTE: Cable lengths and cable type can limit attainable transfer
rate; for details, refer to “SCSI Cable Length” on page 6-6.
2.6.5 Storage Capacity
For a comparison of SDLT 220/320 storage capacities, refer to “Key Differences
Between the SDLT 220 and 320” on page 2-12.
Table 2-8. Maximum Data Transfer Rates
SDLT 220
Sustained
SDLT 220
Burst
Max*
SDLT 320
Sustained
SDLT 320
Burst
Max*
Configur
ation
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 SDLTtape.
‡ 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
- Table of Contents 5
- 81-81148-01 March 2004 vii 7
- List of Tables 9
- List of Figures 11
- Introduction 13
- 1.2 Referenced Documents 14
- 1.3 Related Documents 14
- 1.4 Structure of this Manual 15
- 1.5 Conventions 16
- 1.6 For More Information 17
- 1.7 Reader Comments 17
- 1.8 Quantum Diagnostics Tools 18
- General Drive 19
- Specifications 19
- 2.2 SDLT Product Features 20
- 1 Amber LED 21
- 2 Green LED 21
- 3 Yellow LED 21
- 4 Eject Button 21
- 2.3 Dimensions and Tolerances 22
- 81-81148-01 March 2004 2-5 23
- 2-6 March 2004 81-81148-01 24
- 2.4 Physical Dimensions 25
- Orientation Looks Like This 26
- Typical (Top Side Up) 26
- Left Side Down 26
- Right Side Down 26
- 2.5 Reliability 27
- 2.5.4 Data Integrity 28
- Mechanism 29
- 2.6 Functional Specifications 30
- 81-81148-01 March 2004 2-13 31
- 2-14 March 2004 81-81148-01 32
- 2.6.5 Storage Capacity 33
- 2-16 March 2004 81-81148-01 34
- 81-81148-01 March 2004 2-17 35
- 2.7.2 Air Flow Requirements 36
- 2.7.3 Storage and Shipment 37
- 2.7.4 Altitude 37
- 2-20 March 2004 81-81148-01 38
- ≤ 20 lbs 39
- ≤ 50 lbs 39
- 2-22 March 2004 81-81148-01 40
- 81-81148-01 March 2004 2-23 41
- 2-24 March 2004 81-81148-01 42
- • Cleaning Requested 43
- • Cleaning Required 43
- • Cleaning Tape Expired 43
- SCSI Cleaning Error Reporting 44
- Figure 2-7. Front Panel LEDs 45
- 2-28 March 2004 81-81148-01 46
- Electrical Specifications 47
- 3-2 March 2004 81-81148-01 48
- 3.2 Power Supply Tolerances 49
- 3-4 March 2004 81-81148-01 50
- Thermal Specifications 51
- 4.2 Air Flow Measurements 52
- 81-81148-01 March 2004 4-3 53
- 4-4 March 2004 81-81148-01 54
- 81-81148-01 March 2004 4-5 55
- 4-6 March 2004 81-81148-01 56
- 81-81148-01 March 2004 4-7 57
- SDLT 320 58
- Embedded Bezel 59
- Library Bezel 60
- Regulatory Requirements 61
- 5.1.2 Safety Requirements 62
- 81-81148-01 March 2004 5-3 63
- 5.2.3 Conducted Emissions 64
- 5.2.4 Radiated Emissions 64
- Quantum tape drive products 65
- 5.3 Acoustic Noise Emissions 66
- SCSI and Controller 67
- Interface Specification 67
- 6.2 Setting the SCSI ID 68
- 81-81148-01 March 2004 6-3 69
- 6-4 March 2004 81-81148-01 70
- 6.3 Hardware (Connectors) 71
- 6.4 SCSI Stub Lengths 72
- 6.5 SCSI Cable Length 72
- 6.6 Power On Self Test 73
- 6.7 SCSI Command Timeout 73
- 6-8 March 2004 81-81148-01 74
- 6.8 SCSI and Power Connectors 75
- • Connector body: 51110-0850 76
- Figure 6-4. Loader Connector 76
- (Internal Version Shown) 76
- 81-81148-01 March 2004 6-11 77
- 6-12 March 2004 81-81148-01 78
- 81-81148-01 March 2004 6-13 79
- 6-14 March 2004 81-81148-01 80
- 81-81148-01 March 2004 6-15 81
- 6.10 Configuring the Drive 82
- Updating the Firmware 83
- 7.1.2 Making a FUP/CUP Tape 84
- 7.1.3 Using a CUP/FUP Tape 84
- 81-81148-01 March 2004 7-3 85
- Drive Interface 86
- • Updating the same revision 87
- 7-6 March 2004 81-81148-01 88
- Insertion and Extraction 89
- Guidelines 89
- 8.1.1 General Status Packet 90
- 8.1.2 Loading a Tape 91
- 8.1.3 Unloading a Tape 92
- Configuration) 93
- 81-81148-01 March 2004 8-7 95
- Insertion Depth 97
- Cartridge Insertion Force 97
- Insertion Velocity 97
- Debounce Time 98
- Initialization Time 98
- 81-81148-01 March 2004 8-11 99
- Eject Distance 100
- Cartridge Extraction Force 100
- Extraction Velocity 100
- 81-81148-01 A02 102
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