
Contents
1.0 General ..................................................... 1
1.1 Glossary ..................................................... 1
1.2 General Caution ................................................ 1
1.2.1 Caution of usage ............................................. 2
2.0 General Features ................................................ 5
Part 1. Functional Specification ...................................... 7
3.0 Drive Characteristics .............................................. 9
3.1 Logical Drive Format ............................................. 9
3.2 Data Sheet .................................................... 9
3.3 Performance Characteristics ......................................... 10
3.3.1 Command Processing .......................................... 10
3.3.2 Average Seek Time (Including Settling) ............................... 10
3.3.3 Single Track Seek Time ........................................ 11
3.3.4 Full Stroke Seek ............................................. 12
3.3.5 Average Latency ............................................. 12
3.3.6 Drive Ready Time ........................................... 12
3.3.7 Operating Modes. ............................................ 13
4.0 Data Integrity ................................................. 15
4.1 Data Loss by Power Off ........................................... 15
4.2 Write Cache .................................................. 15
4.3 Equipment Status ............................................... 15
4.4 WRITE Safety ................................................ 16
4.5 Data buffer test ................................................ 16
4.6 Error Recovery ................................................ 16
4.7 Automatic Reallocation ........................................... 16
4.7.1 Non Recovered Write Errors ..................................... 16
4.7.2 Non Recovered Read Errors ...................................... 16
4.7.3 Recovered Read Errors ......................................... 17
5.0 Specification .................................................. 19
5.1 Environment ................................................. 19
5.1.1 Temperature and Humidity ...................................... 19
5.1.2 Magnetic Fields ............................................. 20
5.2 DC Power Requirements .......................................... 21
5.2.1 Start Up Current ............................................ 22
5.3 Reliability ................................................... 23
5.3.1 Data Reliability ............................................. 23
5.3.2 Failure Prediction ( S.M.A.R.T.) ................................... 23
5.3.3 Cable Noise Interference ........................................ 23
5.3.4 Drive Usage Condition ......................................... 23
5.3.5 Preventive Maintenance ........................................ 23
5.3.6 Load/Unload ............................................... 24
5.4 Mechanical Specifications .......................................... 26
5.4.1 Mechanical Dimensions and Weight ................................. 26
5.4.2 Hole Locations ............................................. 26
5.4.3 Mounting Orientation ......................................... 27
Copyright IBM Corp. 1997 iii