Seagate Barracuda ST318418N User Manual

Barracuda 36es2 family, Product manual, volume 1

This manual is related to the following products:

Barracuda ST318438LW Barracuda ST336938LW

Table of contents

Document Outline

1.0 Scope 1
2.0 Applicable standards and reference documentation 3
- 2.1 Standards 3
  - 2.1.1 Electromagnetic compatibility 3
  - 2.1.2 Electromagnetic susceptibility 3
- 2.2 Electromagnetic compliance 3
- 2.3 Reference documents 4
3.0 General description 5
- 3.1 Standard features 6
- 3.2 Media characteristics 6
- 3.3 Performance 6
- 3.4 Reliability 6
- 3.5 Unformatted and formatted capacities 7
- 3.6 Programmable drive capacity 7
- 3.7 Factory installed accessories 7
- 3.8 Options (factory installed) 7
4.0 Performance characteristics 8
- 4.1 Internal drive characteristics (transparent to user) 8
- 4.2 SCSI performance characteristics (visible to user) 8
- 4.3 Start/stop time 9
- 4.4 Prefetch/multi-segmented cache control 9
- 4.5 Cache operation 10
  - 4.5.1 Caching write data 10
  - 4.5.2 Prefetch operation 11
5.0 Reliability specifications 13
- 5.1 Error rates 13
- 5.2 Reliability and service 14
6.0 Physical/electrical specifications 21
- 6.1 AC power requirements 21
- 6.2 DC power requirements 21
- 6.3 Power dissipation 24
- 6.4 Environmental limits 26
- 6.5 Mechanical specifications 30
7.0 Defect and error management 33
- 7.1 Drive internal defects 33
- 7.2 Drive error recovery procedures 33
- 7.3 SCSI systems errors 34
8.0 Installation 35
- 8.1 Drive ID/option select header 35
- 8.2 Cooling 42
  - 8.2.1 Air flow 42
- 8.3 Drive mounting 43
- 8.4 Grounding 43
9.0 Interface requirements 45
- 9.1 General description 45
- 9.2 SCSI interface messages supported 45
- 9.3 SCSI interface commands supported 46
  - 9.3.1 Inquiry Vital Product data 50
  - 9.3.2 Mode Sense data 52
- 9.4 SCSI bus conditions and miscellaneous features supported 55
- 9.5 Synchronous data transfer 57
  - 9.5.1 Synchronous data transfer periods supported 57
  - 9.5.2 REQ/ACK offset 57
- 9.6 Physical interface 57
- 9.7 Electrical description 68
  - 9.7.1 Multimode—SE and LVD alternatives 68
- 9.8 Terminator requirements 72
- 9.9 Terminator power 72
- 9.10 Disc drive SCSI timing 73
- 9.11 Drive activity LED 74
10.0 Seagate Technology support services 75
Figure 1. Barracuda 36ES2 family drive (ST336938LW shown) 1
Figure 2. Typical ST336938/ST336918/ST318438/ST318418 drive +12 V current profile 22
Figure 3. Typical ST336938/ST336918/ST318438/ST318418 drive +5 V current profile 23
Figure 4. ST336938/ST318438 DC current and power vs. input/output operations per second (LVD) 24
Figure 5. ST336918/ST318418 DC current and power vs. input/output operations per second (SE) 25
Figure 6. Location of HDA Temperature Check Point 26
Figure 7. Recommended mounting 28
Figure 8. LW mounting configuration dimensions 30
Figure 9. N mounting configuration dimensions 31
Figure 10. J6 jumper header for LW models 36
Figure 11. J6 jumper header for N model 37
Figure 12. J5 jumper header (on LW models only) 38
Figure 13. J2 option select header (for LW models) 39
Figure 14. J2 option select header (for N models) 39
Figure 15. Air flow (suggested) 42
Figure 16. N model drive physical interface (50-pin SCSI I/O connector) 58
Figure 17. LW model drive physical interface (68-pin J1 SCSI I/O connector) 59
Figure 18. Nonshielded 50-pin SCSI device connector used on N drives 61
Figure 19. SCSI daisy chain interface cabling for N drives 62
Figure 20. Nonshielded 68 pin SCSI device connector used on LW drives 63
Figure 21. SCSI daisy chain interface cabling for LW drives 64
Figure 22. LVD output signals 69
Figure 23. Typical SE-LVD alternative transmitter receiver circuits 69
Figure 24. Single-ended transmitters and receivers on N models 70
1.0 Scope
2.0 Applicable standards and reference documentation
- 2.1 Standards
  - 2.1.1 Electromagnetic compatibility
  - 2.1.2 Electromagnetic susceptibility
- 2.2 Electromagnetic compliance
- 2.3 Reference documents
3.0 General description
- 3.1 Standard features
- 3.2 Media characteristics
- 3.3 Performance
- 3.4 Reliability
- 3.5 Unformatted and formatted capacities
- 3.6 Programmable drive capacity
- 3.7 Factory installed accessories
- 3.8 Options (factory installed)
4.0 Performance characteristics
- 4.1 Internal drive characteristics (transparent to user)
- 4.2 SCSI performance characteristics (visible to user)
- 4.3 Start/stop time
- 4.4 Prefetch/multi-segmented cache control
- 4.5 Cache operation
  - 4.5.1 Caching write data
  - 4.5.2 Prefetch operation
5.0 Reliability specifications
- 5.1 Error rates
- 5.2 Reliability and service
6.0 Physical/electrical specifications
- 6.1 AC power requirements
- 6.2 DC power requirements
- 6.3 Power dissipation
- 6.4 Environmental limits
- 6.5 Mechanical specifications
7.0 Defect and error management
- 7.1 Drive internal defects
- 7.2 Drive error recovery procedures
- 7.3 SCSI systems errors
8.0 Installation
- 8.1 Drive ID/option select header
- 8.2 Cooling
  - 8.2.1 Air flow
- 8.3 Drive mounting
- 8.4 Grounding
9.0 Interface requirements
- 9.1 General description
- 9.2 SCSI interface messages supported
- 9.3 SCSI interface commands supported
  - 9.3.1 Inquiry Vital Product data
  - 9.3.2 Mode Sense data
- 9.4 SCSI bus conditions and miscellaneous features supported
- 9.5 Synchronous data transfer
  - 9.5.1 Synchronous data transfer periods supported
  - 9.5.2 REQ/ACK offset
- 9.6 Physical interface
- 9.7 Electrical description
  - 9.7.1 Multimode—SE and LVD alternatives
- 9.8 Terminator requirements
- 9.9 Terminator power
- 9.10 Disc drive SCSI timing
- 9.11 Drive activity LED
10.0 Seagate Technology support services
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