11.18.1 General Purpose Log Directory

Table 101 defines the 512 bytes that make up the General Purpose Log Directory.

 

Description

Bytes

Offset

 

 

 

 

 

General Purpose Logging Version

2

00h

 

 

 

 

 

Number of sectors in the log at log address 01h (7:0)

1

02h

 

 

 

 

 

Number of sectors in the log at log address 01h (15:8)

1

03h

 

 

 

 

 

Number of sectors in the log at log address 02h (7:0)

1

04h

 

 

 

 

 

Number of sectors in the log at log address 02h (15:8)

1

05h

 

 

 

 

 

...

 

 

 

 

 

 

 

Number of sectors in the log at log address 20h (7:0)

1

40h

 

 

 

 

 

Number of sectors in the log at log address 20h (15:8)

1

41h

 

 

 

 

 

Number of sectors in the log at log address 21h (7:0)

1

42h

 

 

 

 

 

Number of sectors in the log at log address 21h (15:8)

1

43h

 

 

 

 

 

Number of sectors in the log at log address 22h (7:0)

1

44h

 

 

 

 

 

Number of sectors in the log at log address 22h (15:8)

1

45h

 

 

 

 

 

...

 

 

 

 

 

 

 

Number of sectors in the log at log address 80h (7:0)

1

100h

 

 

 

 

 

Number of sectors in the log at log address 80h (15:8)

1

101h

 

 

 

 

 

...

 

 

 

 

 

 

 

Number of sectors in the log at log address FFh (7:0)

1

1FEh

 

 

 

 

 

Number of sectors in the log at log address FFh (15:8)

1

1FFh

 

 

 

 

 

 

512

 

 

 

 

 

Table 101 General Purpose Log Directory

 

 

The value of the General Purpose Logging Version word shall be 0001h. A value of 0000h indicates that there is no General Purpose Log Directory.

The logs at log addresses 80-9Fh shall each be defined as 16 sectors long.

Hitachi hard disk drive specifications

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Hitachi HDS721064CLA332, HCS721050CLA382, A7K2000 General Purpose Log Directory, Hitachi hard disk drive specifications 146

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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