Hitachi HDS723020BLA642 manual Device Attributes Data Structure, Data Structure Revision Number

Models: HDS723020BLA642

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7K200 SATA OEM Specification

perform the off-line read scanning at the off-line data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate(Subcommand D4h) or automatically if the off-line read scanning feature is disabled.

A value of F8h written by the host into the device’s Sector Count register before issuing this subcommand shall cause the automatic Off-line data collection feature to be enabled.

A value of F9 written by the host into the device’s Sector Count register before issuing this subcommand shall cause the off-line read scanning feature to be enabled. The Device perform the off-line read scanning at the off-line data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate(Subcommand D4h) even if the automatic off-line feature is disabled.

Any other non-zero value written by the host into this register before issuing this subcommand is vender specific and will not change the current Automatic Off-Line Data Collection and Off-line Read Scanning status, but device may respond with the error code specified in “Table 123 S.M.A.R.T. Error Codes” on Page 155.

14.39.2Device Attributes Data Structure

The following defines the 512 bytes that make up the Attribute Value information. This data structure is accessed by the host in its entirety using the S.M.A.R.T. Read Attribute Values subcommand. All multi-byte fields shown in these data structures follow the ATA/ATAPI-6 specification for byte ordering, namely that the least significant byte occupies the lowest numbered byte address location in the field.

Description

Bytes

Offset

Format

 

Value

Data Structure Revision Number

2

00h

binary

 

0010h

1st Device Attribute

12

02h

(*1)

 

(*2)

...

..

 

 

 

 

...

..

 

 

 

 

30th Device Attribute

12

15Eh

(*1)

 

(*2)

Off-line data collection status

1

16Ah

(*1)

 

(*2)

Self-test execution status

1

16Bh

(*1)

 

(*2)

Total time in seconds to complete off-line data collection activity

2

16Ch

(*1)

 

(*2)

Current segment pointer

1

16Eh

(*1)

 

(*2)

Off-line data collection capability

1

16Fh

(*1)

 

1Bh

S.M.A.R.T. capability

2

170h

(*1)

 

0003h

S.M.A.R.T. device error logging capability

1

172h

(*1)

 

01h

Self-test failure check point

1

173h

(*1)

 

(*2)

Short self-test completion time in minutes

1

174h

(*1)

 

(*2)

Extended self-test completion time in minutes

1

175h

(*1)

 

(*2)

Reserved

12

176h

 

 

(*3)

Vendor specific

125

182h

 

 

(*3)

Data structure checksum

1

1FFh

(*1)

 

(*2)

 

512

 

 

 

 

(*1) - See following definitions

(*2) - Value varied by actual operating condition

(*3) - Filled with 00h

Table 111 Device Attribute Data Structure

14.39.2.1Data Structure Revision Number

The Data Structure Revision Number identifies which version of this data structure is implemented by the device. This revision number will be set to 0005h. This revision number identifies both the Attribute Value and Attribute Threshold Data structures.

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Hitachi HDS723020BLA642 Device Attributes Data Structure, Data Structure Revision Number, Device Attribute Data Structure

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.