Datasheet

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