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Cheetah X15 ST318451LW
Seagate Cheetah X15 ST318451LW Manuals
Manuals and User Guides for Seagate Cheetah X15 ST318451LW. We have
1
Seagate Cheetah X15 ST318451LW manual available for free PDF download: Product Manual
Seagate Cheetah X15 ST318451LW Product Manual (92 pages)
Cheetah X15 Disc Drive
Brand:
Seagate
| Category:
Storage
| Size: 1.74 MB
Table of Contents
Table of Contents
7
1 Scope
11
Figure 1. Cheetah X15 Family Drive (ST318451LW Shown)
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. Cheetah X15 Family Drive (Exploded View)
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
20
Cache Operation
20
Caching Write Data
21
Prefetch Operation
22
5 Reliability Specifications
23
Error Rates
23
Environmental Interference
23
Read Errors
23
Write Errors
23
Seek Errors
23
Reliability and Service
24
Mean Time between Failure
24
Field Failure Rate Vs Time
24
Preventive Maintenance
25
Service Life
25
Service Philosophy
25
Service Tools
25
Hot Plugging Cheetah X15 Disc Drives
25
S.M.a.r.t
26
Thermal Monitor
27
Drive Self Test (DST)
27
Product Warranty
29
6 Physical/Electrical Specifications
31
AC Power Requirements
31
DC Power Requirements
31
Conducted Noise Immunity
32
Power Sequencing
32
Current Profile
32
Figure 3. Typical ST318451 Drive +12 V Current Profile
33
Figure 4. Typical ST318451 Drive +5 V Current Profile
33
Figure 5. Typical ST39251 Drive +12 V Current Profile
34
Figure 6. Typical ST39251 Drive +5 V Current Profile
34
Power Dissipation
35
Figure 7. ST318451 DC Current and Power Vs. Input/Output Operations Per Second (SE)
35
Figure 8. ST318451 DC Current and Power Vs. Input/Output Operations Per Second (LVD)
35
Figure 9. ST39251 DC Current and Power Vs. Input/Output Operations Per Second (SE)
36
Figure 10. ST39251 DC Current and Power Vs. Input/Output Operations Per Second (LVD)
36
Environmental Limits
37
Temperature
37
Relative Humidity
38
Effective Altitude (Sea Level)
38
Figure 11. Locations of PCBA Components Listed in Table 4
38
Shock and Vibration
39
Figure 12. Recommended Mounting
40
Air Cleanliness
41
Acoustics
41
Electromagnetic Susceptibility
41
Mechanical Specifications
42
Figure 13. LW Mounting Configuration Dimensions
42
Figure 14. LC Mounting Configuration Dimensions
43
7 Defect and Error Management
45
Drive Internal Defects
45
Drive Error Recovery Procedures
45
SCSI Systems Errors
46
8 Installation
47
Drive ID/Option Select Header
47
Figure 15. J6 Jumper Header
48
Figure 16. J5 Jumper Header (on LW Models Only)
49
Figure 17. J2 Option Select Header
50
Notes for Figures 15, 16, and 17
50
Function Description
51
Drive Orientation
52
Cooling
52
Air Flow
52
Figure 18. Air Flow (Suggested)
52
Drive Mounting
53
Grounding
53
9 Interface Requirements
55
General Description
55
SCSI Interface Messages Supported
55
SCSI Interface Commands Supported
56
Inquiry Vital Product Data
59
Mode Sense Data
60
SCSI Bus Conditions and Miscellaneous Features Supported
63
Synchronous Data Transfer
64
Synchronous Data Transfer Periods Supported
64
REQ/ACK Offset
64
Physical Interface
64
DC Cable and Connector
64
Figure 19. LW Model Drive Physical Interface (68-Pin J1 SCSI I/O Connector)
65
Figure 20. LC Model Drive Physical Interface (80-Pin J1 SCSI I/O Connector)
65
SCSI Interface Physical Description
66
SCSI Interface Cable Requirements
66
Mating Connectors
67
Figure 21. SCSI Daisy Chain Interface Cabling for LW Drives
69
Figure 22. Nonshielded 68 Pin SCSI Device Connector Used on LW Drives
70
Figure 23. Nonshielded 80 Pin SCSI "SCA-2" Connector, Used on LC Drives
71
Electrical Description
76
Multimode-SE and LVD Alternatives
76
Figure 24. LVD Output Signals
77
Figure 25. Typical SE-LVD Alternative Transmitter Receiver Circuits
77
Terminator Requirements
78
Terminator Power
78
Disc Drive SCSI Timing
79
Drive Activity LED
80
10 Seagate Technology Support Services
81
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