Hitachi HDS723020BLA642 Idle Immediate E1h/95h, Unload Feature, Idle Immediate Command E1h/95h

Models: HDS723020BLA642

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7K200 SATA OEM Specification

14.10Idle Immediate (E1h/95h)

Command Block Output Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Input Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Register

 

 

 

 

 

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Data

 

 

 

 

 

 

 

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Data

 

 

 

 

 

 

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Feature

 

 

 

 

 

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Error

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

Sector Count

 

 

 

 

 

 

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Sector Count

 

 

 

 

 

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LBA Low

 

 

 

 

 

 

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LBA Low

 

 

 

 

 

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LBA Mid

 

 

 

 

 

 

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LBA Mid

 

 

 

 

 

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LBA High

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LBA High

 

 

 

 

 

 

 

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Device

 

 

 

 

 

 

 

 

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Device

 

 

 

 

 

 

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Command

 

 

 

 

 

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Status

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

Unload Feature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Output Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Input Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

 

 

 

 

 

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Register

 

 

 

 

 

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Data

 

 

 

 

 

 

 

 

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Data

 

 

 

 

 

 

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Feature

 

 

 

 

 

 

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Error

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

Sector Count

 

 

 

 

 

 

0

 

 

 

0

 

 

 

 

0

 

 

 

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Sector Count

 

 

 

 

 

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LBA Low

 

 

 

 

 

 

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LBA Low

 

 

 

 

 

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LBA Mid

 

 

 

 

 

 

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1

 

 

 

 

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1

 

 

 

1

 

 

 

 

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0

 

 

LBA Mid

 

 

 

 

 

-

-

 

 

 

 

 

-

 

 

 

-

 

-

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LBA High

 

 

 

 

 

 

0

 

 

 

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0

 

 

 

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LBA High

 

 

 

 

 

-

-

 

 

 

 

 

-

 

 

 

-

 

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Device

 

 

 

 

 

 

 

 

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D

 

 

 

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Device

 

 

 

 

 

 

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Command

 

 

 

 

 

1

 

 

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0

 

 

 

0

 

 

 

0

 

 

 

1

 

 

Status

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

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7

 

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1

 

 

0

 

 

CRC

 

UNC

 

0

IDN

 

0

 

 

 

 

 

ABT

 

 

T0N

 

 

 

 

 

AM

 

 

 

BSY

 

RDY

 

DF

 

DSC

DRQ

 

COR

 

IDX

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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0

 

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V

 

 

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0

 

V

 

0

 

V

-

 

 

0

 

 

 

 

0

 

 

V

 

 

Table 65 Idle Immediate Command (E1h/95h)

The Idle Immediate command causes the device to enter performance Idle mode.

The device is spun up to operating speed. If the device is already spinning, the spin up sequence is not executed.

During Idle mode the device is spinning and ready to respond to host commands immediately. The Idle Immediate command will not affect the auto power down timeout parameter.

Unload Feature:

The UNLOAD FEATURE of the IDLE IMMEDIATE command allows the host to immediately unload the heads. The device stops read look-ahead if it is in process. If the device is performing a write operation, the device suspends writing cached data onto the media as soon as possible. The data in the write cache is retained, and the device resumes writing the cached data onto the media after receiving a Software Reset, a Hardware Reset, or any new command except IDLE IMMEDIATE with UNLOAD FEATURE.

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Hitachi HDS723020BLA642 manual Idle Immediate E1h/95h, Unload Feature, Idle Immediate Command E1h/95h

HDS723020BLA642 specifications

The Hitachi HDS723020BLA642 is a high-performance hard disk drive that exemplifies the balance between reliability and advanced technology, making it an excellent choice for a range of applications, from desktop computers to enterprise storage solutions. This 2TB SATA hard drive is designed to meet the growing data storage needs of users who demand both speed and efficiency.

One of the key features of the HDS723020BLA642 is its impressive rotational speed of 7200 RPM. This speed facilitates faster data access and improved overall performance, significantly enhancing the user experience during data-intensive operations such as gaming, video editing, and large file transfers. Coupled with a SATA III interface, this drive facilitates data transfer rates of up to 6 Gb/s, providing an efficient conduit for moving data quickly between the hard drive and the motherboard.

The drive comes equipped with a large 64 MB cache, which plays a crucial role in buffering read and write operations. This substantial amount of cache memory allows the drive to temporarily store frequently accessed data, leading to reduced latency and enabling smoother multitasking capabilities. Users will benefit from faster load times and reduced wait periods when working with large files.

Reliability is another defining characteristic of the HDS723020BLA642. Hitachi, now a part of Western Digital, has a longstanding reputation for producing durable hard drives. This model incorporates advanced technologies, such as the Fluid Dynamic Bearing (FDB) for quieter operation and better longevity. The drive also features an enhanced error recovery system that minimizes the risk of data loss, making it a suitable option for both personal and professional use.

In terms of power efficiency, the HDS723020BLA642 is designed to consume less power during operation compared to older hard drive models. This efficiency not only helps in reducing operational costs but also contributes to a longer lifespan for the drive itself.

Overall, the Hitachi HDS723020BLA642 hard drive combines speed, reliability, and efficiency into a compact package, making it an ideal choice for users needing a substantial amount of storage without compromising on performance. Whether for upgrading an existing system or building a new one, this drive offers a blend of technology and durability that caters to modern storage demands.