Hitachi hard disk drive specifications
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Table of contents
1 General ................................................................................................................................................................13
1.1 Introduction .................................................................................................................................... 13
1.2 Glossary ........................................................................................................................................... 14
1.3 General caution ............................................................................................................................... 14
1.4 References ....................................................................................................................................... 14
2 General features .................................................................................................................................................15
Part 1. Functional specification ....................................................................................................................... 16
3 Fixed disk subsystem description .......................................................................................................................17
3.1 Control Electronics ......................................................................................................................... 17
3.2 Head disk assembly ........................................................................................................................ 17
3.3 Actuator ........................................................................................................................................... 17
4 Drive characteristics ............................................................................................................................................18
4.1 Default logical drive parameters ................................................................................................... 18
4.2 Data sheet ....................................................................................................................................... 19
4.3 World Wide Name Assignment ...................................................................................................... 19
4.4 Drive organization .......................................................................................................................... 20
4.4.1 Drive Format ........................................................................................................................... 20
4.4.2 Cylinder allocation .................................................................................................................. 20
4.5 Performance characteristics .......................................................................................................... 21
4.5.1 Command overhead ................................................................................................................. 21
4.5.2 Mechanical positioning ........................................................................................................... 22
4.5.3 Drive ready time ...................................................................................................................... 22
4.5.4 Operating modes ..................................................................................................................... 23
5 Defect flagging strategy ......................................................................................................................................24
6 Specification ........................................................................................................................................................25
6.1 Electrical interface ......................................................................................................................... 25
6.1.1 Connector location ................................................................................................................... 25
6.1.2 Signal definition(SATA) .......................................................................................................... 26
6.1.3 Out of band signaling(SATA) .................................................................................................. 28
6.2 Environment ................................................................................................................................... 29
6.2.1 Temperature and humidity ..................................................................................................... 29
6.2.2 Corrosion test........................................................................................................................... 30
6.2.3 Atmospheric condition ............................................................................................................ 30
6.3 DC power requirements ................................................................................................................. 31
6.3.1 Input voltage ............................................................................................................................ 31
6.3.2 Power supply current (typical) ............................................................................................... 31
6.3.3 Power supply generated ripple at drive power connector .................................................... 32
6.4 Reliability ........................................................................................................................................ 33
6.4.1 Data integrity .......................................................................................................................... 33
6.4.2 Cable noise interference ......................................................................................................... 33
6.4.3 Load/Unload ............................................................................................................................. 33
6.4.4 Start/stop cycles ....................................................................................................................... 33
6.4.5 Preventive maintenance ......................................................................................................... 33
6.4.6 Data reliability ........................................................................................................................ 33
6.4.7 Required Power-Off Sequence ................................................................................................ 33
6.5 Mechanical specifications............................................................................................................... 34
6.5.1 Physical dimensions ................................................................................................................ 34
6.5.2 Hole locations........................................................................................................................... 36
6.5.3 Connector locations ................................................................................................................. 37
6.5.4 Drive mounting ........................................................................................................................ 38
6.5.5 Heads unload and actuator lock ............................................................................................. 38
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