Table Of Contents - Hitachi HTS421212H9AT00 - Travelstar 120 GB Hard Drive Specifications

Table of Contents

1.0. General.................................................................................................................................... 1
1.1. Introduction....................................................................................................................... 1
1.2. References......................................................................................................................... 1
1.3. Abbreviations.................................................................................................................... 1
1.4. Caution.............................................................................................................................. 3
1.5. Drive handling precautions............................................................................................... 4
2.0. Outline of the drive ................................................................................................................ 5
3.0. Fixed-disk subsystem description......................................................................................... 9
3.1. Control electronics............................................................................................................ 9
3.2. Head disk assembly data................................................................................................... 9
4.0. Drive characteristics ............................................................................................................ 11
4.1. Formatted capacity.......................................................................................................... 11
4.2. Data sheet........................................................................................................................ 11
4.3. Cylinder allocation.......................................................................................................... 12
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 ...................................................................................................... 27
6.1.3 Conductive noise ................................................................................................... 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 ........................................................................................ 29