Description

Bytes

Offset

 

 

 

 

 

1st command data structure

18

00h

 

 

 

 

 

2nd command data structure

18

12h

 

 

 

 

 

3rd command data structure

18

24h

 

 

 

 

 

4th command data structure

18

36h

 

 

 

 

 

5th command data structure

18

48h

 

 

 

 

 

Error data structure

34

5Ah

 

 

 

 

 

 

124

 

 

 

 

 

Table 103 Extended Error log data structure

 

 

Command data structure: Data format of each command data structure is shown below.

Description

Bytes

Offset

 

 

 

Device Control register

1

00h

 

 

 

Features register (7:0) (see Note)

1

01h

 

 

 

Features register (15:8)

1

02h

 

 

 

Sector count register (7:0)

1

03h

 

 

 

Sector count register (15:8)

1

04h

 

 

 

Sector number register (7:0)

1

05h

 

 

 

Sector number register (15:8)

1

06h

 

 

 

Cylinder Low register (7:0)

1

07h

 

 

 

Cylinder Low register (15:8)

1

08h

 

 

 

Cylinder High register (7:0)

1

09h

 

 

 

Cylinder High register (15:8)

1

0Ah

 

 

 

Device/Head register

1

0Bh

 

 

 

Command register

1

0Ch

 

 

 

Reserved

1

0Dh

 

 

 

Timestamp (milliseconds from Power-on)

4

0Eh

 

 

 

 

18

 

 

 

 

Note: bits (7:0) refer to the most recently written contents of the register. Bits (15:8) refer to the contents of the register prior to the most recent write to the register.

Table 104 Command data structure

Hitachi hard disk drive specifications

148

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Image 148
Hitachi HCS721016CLA382, HCS721050CLA382, HCS721032CLA382, A7K2000 Extended Error log data structure, Command data structure

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.

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