Hitachi Global Storage Technologies
Table of Contents
1.0 General
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5
1.1 Introduction
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5
1.2 References
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5
1.3 Abbreviations
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5
1.4 Caution
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7
1.5 Drive handling precautions
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8
2.0 Outline of the drive
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9
3.0 Fixed-disk subsystem description
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13
3.1 Control electronics
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13
3.2 Head disk assembly data
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13
4.0 Drive characteristics
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15
4.1 Formatted capacity
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15
4.2 Data sheet
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15
4.3 Cylinder allocation
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16
4.4 Performance characteristics
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17
4.4.1 Command overhead
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17
4.4.2 Mechanical positioning
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17
4.4.3 Operating modes
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19
5.0 Data integrity
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21
5.1 Data loss at power off
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21
5.2 Write Cache
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21
5.3 Equipment status
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21
5.4 WRITE safety
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22
5.5 Data buffer test
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22
5.6 Error recovery
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22
5.7 Automatic reallocation
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22
5.7.1 Nonrecovered write errors
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22
5.7.2 Nonrecoverable read error
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22
5.7.3 Recovered read errors
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22
5.8 ECC
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23
6.0 Specification
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25
6.1 Environment
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25
6.1.1 Temperature and humidity
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25
6.1.2 Radiation noise
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26
6.1.3 Conductive noise
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27
6.1.4 Magnetic fields
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27
6.2 DC power requirements
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27
6.2.1 Power consumption efficiency
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28
6.3 Reliability
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28
6.3.1 Data Reliability
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28
6.3.2 Failure prediction (S.M.A.R.T.)
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28
6.3.3 Cable noise interference
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28