Hitachi Deskstar 7K80, Specifications

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Deskstar 7K80 Hard Disk Drive Specification
1
Table Of Contents
1.0 General................................................................................................................11
1.1 Introduction..............................................................................................11
1.2 References................................................................................................11
1.3 Abbreviations...........................................................................................11
1.4 Caution.....................................................................................................13
2.0 General features of the drive ............................................................................15
3.0 Fixed-disk subsystem description.....................................................................19
3.1 Control electronics ...................................................................................19
3.2 Head disk assembly ................................................................................19
3.3 Actuator ...................................................................................................19
4.0 Drive characteristics ..........................................................................................21
4.1 Default logical drive parameters..............................................................21
4.2 Data sheet.................................................................................................22
4.3 World Wide Name Assignment ...............................................................22
4.4 Drive organization ...................................................................................22
4.4.1 Drive format....................................................................................22
4.4.2 Cylinder allocation..........................................................................23
4.5 Performance characteristics .....................................................................24
4.5.1 Command overhead ........................................................................24
4.5.2 Mechanical positioning...................................................................24
4.5.3 Drive ready time .............................................................................26
4.5.4 Data transfer speed..........................................................................27
4.5.5 Throughput......................................................................................28
4.5.6 Operating modes .............................................................................29
5.0 Defect flagging strategy .....................................................................................31
6.0 Electrical interface specification.......................................................................33
6.1 Connector location ...................................................................................33
6.1.1 DC power connector .......................................................................33
6.1.2 AT signal connector........................................................................33
6.2 Signal definitions .....................................................................................34
6.3 Signal descriptions ...................................................................................35
6.4 Interface logic signal levels .....................................................................38
6.5 Reset timings............................................................................................38
6.6 PIO timings ..............................................................................................39
6.6.1 Write DRQ interval time.................................................................39