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Hitachi HDS723020BLA642 manual 14.39 S.M.A.R.T Function Set B0h, 14.39.1 S.M.A.R.T. Sub commands

Models: HDS723020BLA642

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7K200 SATA OEM Specification

14.39S.M.A.R.T Function Set (B0h)

Command Block Output Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Input Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

 

 

 

7

 

 

6

 

 

5

 

 

 

4

 

 

3

 

 

2

 

 

 

1

 

0

 

 

Register

 

 

 

 

 

7

 

6

 

 

 

 

5

 

 

4

3

2

 

1

 

0

Data

 

 

 

 

-

 

-

 

-

 

 

 

-

 

-

 

-

 

 

-

 

-

 

 

Data

 

 

 

 

 

 

-

 

-

 

-

 

-

-

-

 

-

 

-

Feature

 

 

 

 

V

 

 

V

 

 

V

 

V

 

 

V

 

 

V

 

 

V

V

 

Error

 

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

Sector Count

 

 

 

 

V

 

 

V

 

 

V

 

V

 

 

V

 

 

V

 

 

V

V

 

Sector Count

 

 

 

 

 

-

 

-

 

 

-

 

 

-

 

 

-

-

 

-

 

-

LBA Low

 

 

 

-

 

-

 

-

 

 

 

-

 

-

 

-

 

 

-

 

-

 

 

LBA Low

 

 

 

 

 

-

 

-

 

 

-

 

-

 

-

-

 

-

 

-

LBA Mid

 

 

 

 

0

 

 

1

 

 

0

 

 

 

0

 

 

1

 

 

1

 

 

 

1

 

1

 

 

LBA Mid

 

 

 

 

 

-

 

-

 

 

 

 

-

 

 

-

 

 

-

-

 

-

 

-

LBA High

 

 

 

 

1

 

 

1

 

 

0

 

 

 

0

 

 

0

 

 

0

 

 

 

1

 

0

 

 

LBA High

 

 

 

 

 

-

 

-

 

 

 

 

-

 

 

-

 

 

-

-

 

-

 

-

Device

 

 

 

 

 

-

 

 

-

 

 

-

 

 

 

-

 

 

-

 

 

-

 

 

 

-

 

-

 

 

Device

 

 

 

 

 

 

-

 

-

 

 

 

 

-

 

 

-

 

-

-

 

-

 

-

Command

 

 

 

1

 

0

 

1

 

 

 

1

 

0

 

0

 

 

0

 

0

 

 

Status

 

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

6

5

4

 

3

 

 

 

 

2

 

 

 

 

 

1

 

 

 

 

0

 

 

 

 

7

 

6

 

5

 

4

3

 

 

 

2

 

 

 

1

 

 

0

 

CRC

 

UNC

0

IDN

 

0

 

 

 

ABT

 

 

T0N

 

 

 

AM

 

 

BSY

 

RDY

 

DF

 

DSC

DRQ

 

COR

 

 

IDX

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

0

0

0

 

0

 

 

 

 

 

 

V

 

 

0

 

 

 

 

0

 

 

 

 

0

 

V

 

0

 

V

-

 

 

 

0

 

 

 

0

 

 

V

 

Table 109 S.M.A.R.T. Function Set Command (B0h)

The S.M.A.R.T. Function Set command provides access to Attribute Values, Attribute Thresholds and other low level subcommands that can be used for logging and reporting purposes and to accommodate special user needs. The S.M.A.R.T. Function Set command has several separate subcommands which are selectable via the device’s Features Register when the S.M.A.R.T. Function Set command is issued by the host.

14.39.1S.M.A.R.T. Sub commands

In order to select a subcommand the host must write the subcommand code to the device’s Features Register before issuing the S.M.A.R.T. Function Set command. The subcommands and their respective codes are listed below.

Code

Subcommand

D0h

S.M.A.R.T. Read Attribute Values

D1h

S.M.A.R.T. Read Attribute Thresholds

D2h

S.M.A.R.T. Enable/disable Attribute Autosave

D3h

S.M.A.R.T. Save Attribute Values

D4h

S.M.A.R.T. Execute Off-line Immediate

D5h

S.M.A.R.T. Read Log Sector

D6h

S.M.A.R.T. Write Log Sector

D8h

S.M.A.R.T. Enable Operations

D9h

S.M.A.R.T. Disable Operations

DAh

S.M.A.R.T. Return Status

DBh

S.M.A.R.T. Enable/Disable Automatic Off-Line

14.39.1.1S.M.A.R.T. Read Attribute Values (Subcommand D0h)

This subcommand returns the device’s Attribute Values to the host. Upon receipt of the S.M.A.R.T. Read Attribute Values subcommand from the host, the device saves any updated Attribute Values to the Attribute Data sectors, and then waits for the host to transfer the 512 bytes of Attribute Value information from the device.

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Hitachi HDS723020BLA642 manual 14.39 S.M.A.R.T Function Set B0h, 14.39.1 S.M.A.R.T. Sub commands
Page 140 Page 142

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.