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Barracuda 18LP ST318275LW
Seagate Barracuda 18LP ST318275LW Manuals
Manuals and User Guides for Seagate Barracuda 18LP ST318275LW. We have
1
Seagate Barracuda 18LP ST318275LW manual available for free PDF download: Product Manual
Seagate Barracuda 18LP ST318275LW Product Manual (96 pages)
18LP Family
Brand:
Seagate
| Category:
Storage
| Size: 1.84 MB
Table of Contents
Table of Contents
7
1 Scope
11
Figure 1. Barracuda 18LP Family Drive
11
2 Applicable Standards and Reference Documentation
13
Standards
13
Electromagnetic Compatibility
13
Electromagnetic Susceptibility
13
Electromagnetic Compliance
13
Reference Documents
14
3 General Description
15
Figure 2. Barracuda 18LP Family Drive
16
Standard Features
17
Media Characteristics
17
Performance
17
Reliability
17
Unformatted and Formatted Capacities
18
Programmable Drive Capacity
18
Factory Installed Accessories
18
Options (Factory Installed)
18
Accessories (User Installed)
18
4 Performance Characteristics
19
Internal Drive Characteristics (Transparent to User)
19
SCSI Performance Characteristics (Visible to User)
19
Access Time
19
Format Command Execution Time (Minutes)
19
Generalized Performance Characteristics
19
Start/Stop Time
20
Prefetch/Multi-Segmented Cache Control
21
Cache Operation
21
Caching Write Data
22
Prefetch Operation
22
5 Reliability Specifications
23
Error Rates
23
Environmental Interference
23
Read Errors
23
Write Errors
23
Seek Errors
24
Reliability and Service
24
Mean Time between Failure
24
Preventive Maintenance
24
Service Life
24
Service Philosophy
24
Service Tools
24
Hot Plugging Barracuda 18LP Disc Drives
25
S.M.a.r.t
25
Product Warranty
26
6 Physical/Electrical Specifications
29
AC Power Requirements
29
DC Power Requirements
29
Conducted Noise Immunity
30
Power Sequencing
30
Current Profile
30
Figure 3A. Typical Barracuda 18LP Family Drive +12 V Current Profile
30
Figure 3B. Typical Barracuda 18LP Family Drive +5 V Current Profile
31
Power Dissipation
32
Figure 3C. DC Current and Power Vs. Input/Output Operations Per Second for ST318275 Drives
32
Figure 3D. DC Current and Power Vs. Input/Output Operations Per Second for ST318275 Drives
32
Figure 3E. DC Current and Power Vs. Input/Output Operations Per Second for ST39175 Drives
33
Figure 3F. DC Current and Power Vs. Input/Output Operations Per Second for ST39175 Drives
33
Environmental Limits
34
Temperature
34
Figure 4. Locations of PCBA Components Listed in Table 3
35
Relative Humidity
36
Effective Altitude (Sea Level)
36
Shock and Vibration
36
Figure 5. Recommended Mounting
37
Air Cleanliness
38
Acoustics
38
Electromagnetic Susceptibility
38
Mechanical Specifications
39
Figure 6A. Mounting Configuration Dimensions for "LW" Model
39
Figure 6B. Mounting Configuration Dimensions for "LC" Model
40
7 Defect and Error Management
41
Drive Internal Defects
41
Drive Error Recovery Procedures
41
SCSI Systems Errors
42
8 Installation
43
Drive ID/Option Select Header
43
Figure 7A. Barracuda 18LP Family Drive ID Select
44
Figure 7B. Barracuda 18LP Family Drive ID Select Header J5 for "LW" Model (J5 Pins 1-12)
45
Figure 7C. Barracuda 18LP Family Drive Option Select Header
46
Function Description
47
Drive Orientation
47
Cooling
47
Air Flow
47
Figure 8. Air Flow (Suggested)
48
Drive Mounting
49
Grounding
49
9 Interface Requirements
51
General Description
51
SCSI Interface Messages Supported
51
SCSI Interface Commands Supported
52
Inquiry Vital Product Data
55
Mode Sense Data
57
SCSI Bus Conditions and Miscellaneous Features Supported
60
Synchronous Data Transfer
62
Synchronous Data Transfer Periods Supported
62
REQ/ACK Offset
62
Physical Interface
62
DC Cable and Connector
62
Figure 9A. Model "LW" Drive Physical Interface (68 Pin J1 SCSI I/O Connector)
63
Figure 9B. Model "LC" Drive Physical Interface
63
SCSI Interface Physical Description
64
SCSI Interface Cable Requirements
65
Mating Connectors
65
Figure 10. SCSI Daisy Chain Interface Cabling for "LW" Model Drives
67
Figure 11A. Nonshielded 68 Pin SCSI Device Connector Used on "LW" Models
68
Figure 11B. Nonshielded 80 Pin SCSI "SCA-2" Connector, Used on "LC" Models
69
Electrical Description
75
Multimode-SE or LVD Alternative
75
Figure 12. LVD Output Signals
76
Figure 13. Typical SE-LVD Alternative Transmitter Receiver Circuits
76
Terminator Requirements
77
Terminator Power
77
Disc Drive SCSI Timing
78
10 Seagate Technology Support Services
81
Technical Support
82
Appendix A. Sense Keys and Additional Sense Codes Supported
85
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