Output Parameters To The Device

 

Feature Current

The number of sectors to be transferred low order, bits (7:0).

Feature Previous

The number of sectors to be transferred high order, bits (15:8).

Sector Count Current

.

 

TAG (bits 7-3)

The TAG value shall be assigned to be different from all other queued

 

commands. The value shall not exceed the maximum queue depth specified by

 

the Word 75 of the Identify Device information.

Sector Count Previous

 

 

PRIO (bits 7)

The Priority (PRIO) value shall be assigned by the host based on the priority of

 

the command issued. The device shall make a best effort to complete High

 

priority requests in a more timely fashion than Normal priority requests. The

 

Priority values are defined as follows:

 

0b

Normal priority

 

1b

High priority

Sector Number Current

LBA (7:0)

Sector Number Previous

LBA (31:24)

Cylinder Low Current

LBA (15:8)

Cylinder Low Previous

LBA (39:32)

Cylinder High Current

LBA (23:16)

Cylinder High Previous

LBA (47:40)

Device/Head

 

 

FUA (bit 7)

When the FUA bit is set to 1, the requested data is always retrieved from the

 

media regardless of whether the data are held in the sector buffer or not.

 

When the FUA bit is set to 0, the data may be retrieved from the media or from

 

the cached data left by previously processed Read or Write commands.

Input Parameters From The Device

Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error.

Sector Number (HOB=1) LBA (31:24)of the address of the first unrecoverable error.

Cylinder Low (HOB=0) LBA (15:8)of the address of the first unrecoverable error.

Cylinder Low (HOB=1) LBA (39:32)of the address of the first unrecoverable error.

Cylinder High (HOB=0) LBA (23:16)of the address of the first unrecoverable error.

Cylinder High (HOB=1) LBA (47:40)of the address of the first unrecoverable error.

Hitachi hard disk drive specifications

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Hitachi HDS721075CLA632, HCS721050CLA382, HCS721032CLA382, HCS721025CLA382 Hitachi hard disk drive specifications 143

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.