List of tables

 

Table 1 Type and Model#

10

Table 2

Formatted capacity

15

Table 3

Formatted capacity --Continued--

15

Table 4

Formatted capacity --Continued--

15

Table 5

Formatted capacity --Continued--

16

Table 6 Mechanical positioning performance

17

Table 7 World Wide Name Assignment

17

Table 8

Command overhead

19

Table 9 Mechanical positioning performance

20

Table 10 Single Track Seek Time

21

Table 11

Latency Time

21

Table 12 Drive ready time

21

Table 13 Mode transition times

22

Table 14 Interface connector pins and I/O signals

25

Table 15

Parameter descriptions

27

Table 16 Temperature and humidity

28

Table 17

Input voltage

30

Table 18 Power supply current of 2 Disk model

30

Table 19 Power supply current of 1 Disk model

31

Table 20 Power supply generated ripple at drive power connector

31

Table 21

Physical Dimensions

37

Table 22 Random vibration PSD profile break points (operating)

40

Table 23 Random vibration PSD profile break points (nonoperating)

41

Table 24 Sinusoidal shock wave

42

Table 25

Rotational Shock

42

Table 26 Sound power levels

43

Table 27 Alternate Status Register

48

Table 28 Device Control Register

49

Table 29

Drive Address Register

50

Table 30

Device/Head Register

50

Table 31

Error Register

51

Table 32

Status Register

53

Table 33

Reset Response

54

Table 34 Default Register Values

55

Table 35

Diagnostic Codes

55

Table 36

Power conditions

58

Table 37 Command table for device lock operation -1

65

Table 38 Command table for device lock operation -2

66

Table 39 Phy Event Counter Identifiers

78

Table 40 READ LOG EXT Log Page 11h data structure definition

80

Table 41 SCT Log Page and direction

81

Table 42 Identify Device Information Word 206

81

Table 43 Output Registers of SCT Command Using SMART

83

Table 44 Input Registers of SCT Command Using SMART

83

Table 45 Input Registers of SCT Command Using Write Log Ext

84

Table 46 Output Registers of SCT Command Using Write Log Ext

84

Table 47 Key Sector Format

85

Table 48 SCT Action Code List

85

Table 49 Extended Status Code

86

Table 50 Input Registers of SCT Data Transfer Using SMART

87

-Hitachi hard disk drive specifications –

6

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Hitachi HDS721050CLA662 Power supply generated ripple at drive power connector, Command table for device lock operation
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HCS721016CLA382, HCS721050CLA382, HCS721025CLA382, HDP725050GLA360, HUA722050CLA330/1 specifications

Hitachi's lineup of hard disk drives, including models such as HDS721075CLA632, HDS721032CLA362, HDS721032CLA662, HDS721050CLA362, and DSDS7210C09EN-04, offers a variety of features catering to different storage needs. These drives are widely recognized for their reliability, performance, and efficiency, making them suitable for both consumer and enterprise applications.

The HDS721075CLA632 model, with a capacity of 750GB, strikes a balance between performance and storage capabilities. It operates at 7200 RPM, ensuring quick access to data while maintaining low latency. Its 32MB cache enhances data transfer rates and improves overall system responsiveness. This HDD is particularly useful for gaming, multimedia, and office applications, allowing users to store a substantial amount of data with quick retrieval times.

The HDS721032CLA362 and HDS721032CLA662 share many similarities and are both designed for budget-conscious consumers. With a capacity of 320GB and a 7200 RPM, they offer efficient storage solutions for everyday tasks. The 32MB cache buffer enables efficient caching of frequently accessed files, providing a smooth experience for users.

Another notable model is the HDS721050CLA362, which features a capacity of 500GB. Like its counterparts, this drive operates at a speed of 7200 RPM and utilizes a 32MB cache, which ensures optimal performance for data-heavy applications. This model stands out for its energy efficiency, resulting in lower operational costs, making it an appealing choice for businesses and energy-conscious consumers alike.

On the other hand, the DSDS7210C09EN-04 is a part of Hitachi's enterprise-oriented offerings. This drive is engineered for demanding applications, featuring advanced technologies such as error recovery controls and enhanced data protection features. With a focus on reliability and performance, the DSDS7210C09EN-04 serves well in server environments and for high-performance computing.

Hitachi's hard drives incorporate various technologies that enhance their performance and durability. Features such as staggered start-up, which gradually powers on the drive, help minimize power surges and increase the longevity of the device. Moreover, Hitachi's commitment to quality ensures that each drive undergoes rigorous testing, guaranteeing functionality and reliability.

Overall, the diverse range of models from Hitachi provides effective solutions for anyone from casual users to enterprises, combining storage capacity with advanced technologies to meet the evolving demands of modern data storage.
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