Seagate ST15150N Product Manual - Page 7

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Contents 1.0 Scope ...1 2.0 Applicable standard and reference documentation 3 2.1 Standards ...3 2.2 Applicable reference documents 3 3.0 General description ...5 4.0 Standard features ...7 4.1 Performance ...7 4.1.1 Reliability ...7 4.2 Unformatted and Formatted Capacities 8 4.3 Options ...8 4.3.1 Front panel ...8 4.3.2 Single-unit shipping pack 8 4.3.3 Barracuda 4 Installation Guide 8 4.3.4 Adaptor accessory frame kit 8 4.4 Installation ...9 5.0 Performance characteristics 11 5.1 Internal drive characteristics 11 5.2 SCSI seek performance characteristics 11 5.2.1 Seek time ...13 5.2.2 Format drive command execution time 13 5.3 General performance characteristics 14 5.4 Start/stop time ...15 5.5 Prefetch/multi-segmented cache control 15 5.6 Caching write data ...17 5.7 Synchronized spindle operation 17 6.0 Reliability specifications 21 6.1 Error rates ...21 6.1.1 Environmental interference 21 6.1.2 Write errors ...21 6.1.3 Seek errors ...22 6.2 Reliability and service 22 6.2.1 Mean time between failures (MTBF 22 6.2.2 Air flow ...22 6.2.3 Preventive maintenance 30 6.2.4 Service life ...30 6.2.5 Service philosophy 30 6.2.6 Installation ...30 6.2.7 Service tools 30 6.2.8 Hot plugging Barracuda 4 disc drives 31 7.0 Physical/electrical specifications 33 7.1 AC power requirements 33 7.2 DC power requirements 33 7.2.1 Conducted noise immunity 34 7.2.2 Power sequencing 34 7.2.3 12V current profile 35

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Contents
1.0
Scope
...................................................................................................................................
1
2.0
Applicable standard and reference documentation
.........................................................
3
2.1
Standards
....................................................................................................................
3
2.2
Applicable reference documents
..................................................................................
3
3.0
General description
............................................................................................................
5
4.0
Standard features
...............................................................................................................
7
4.1
Performance
................................................................................................................
7
4.1.1
Reliability
.........................................................................................................
7
4.2
Unformatted and Formatted Capacities
.......................................................................
8
4.3
Options
........................................................................................................................
8
4.3.1
Front panel
.......................................................................................................
8
4.3.2
Single-unit shipping pack
.................................................................................
8
4.3.3
Barracuda 4 Installation Guide
.........................................................................
8
4.3.4
Adaptor accessory frame kit
............................................................................
8
4.4
Installation
....................................................................................................................
9
5.0
Performance characteristics
.............................................................................................
11
5.1
Internal drive characteristics
.......................................................................................
11
5.2
SCSI seek performance characteristics
......................................................................
11
5.2.1
Seek time
........................................................................................................
13
5.2.2
Format drive command execution time
...........................................................
13
5.3
General performance characteristics
..........................................................................
14
5.4
Start/stop time
.............................................................................................................
15
5.5
Prefetch/multi-segmented cache control
.....................................................................
15
5.6
Caching write data
......................................................................................................
17
5.7
Synchronized spindle operation
..................................................................................
17
6.0
Reliability specifications
...................................................................................................
21
6.1
Error rates
...................................................................................................................
21
6.1.1
Environmental interference
.............................................................................
21
6.1.2
Write errors
.....................................................................................................
21
6.1.3
Seek errors
.....................................................................................................
22
6.2
Reliability and service
.................................................................................................
22
6.2.1
Mean time between failures (MTBF)
...............................................................
22
6.2.2
Air flow
............................................................................................................
22
6.2.3
Preventive maintenance
.................................................................................
30
6.2.4
Service life
......................................................................................................
30
6.2.5
Service philosophy
..........................................................................................
30
6.2.6
Installation
.......................................................................................................
30
6.2.7
Service tools
...................................................................................................
30
6.2.8
Hot plugging Barracuda 4 disc drives
.............................................................
31
7.0
Physical/electrical specifications
.....................................................................................
33
7.1
AC power requirements
..............................................................................................
33
7.2
DC power requirements
..............................................................................................
33
7.2.1
Conducted noise immunity
..............................................................................
34
7.2.2
Power sequencing
..........................................................................................
34
7.2.3
12V current profile
..........................................................................................
35