Hitachi HDS723020BLA642 manual Extended Self-test log sector, Device error count

Models: HDS723020BLA642

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7K200 SATA OEM Specification

State shall contain a value indicating the state of the device when the command was issued to the device or the reset occurred as described below.

Value

State

x0h

Unknown

x1h

Sleep

x2h

Standby

x3h

Active/Idle

x4h

SMART Off-line or Self-test

x5h-xAh

Reserved

xBh-xFh

Vendor specific

 

 

Note: The value of x is vendor specific.

14.16.2.4Device error count

This field shall contain the total number of errors attributable to the device that have been reported by the device during the life of the device. This count shall not include errors attributed to the receipt of faulty commands such as commands codes not implemented by the device or requests with invalid parameters or invalid addresses. If the maximum value for this field is reached the count shall remain at the maximum value when additional errors are encountered and logged.

14.16.3Extended Self-test log sector

The following table defines the format of each of the sectors that comprise the Extended SMART self-test log.

The Extended SMART self-test log sector shall support 48-bit and 28-bit addressing. All 28-bit entries contained in the SMART self-test log, defined in “Self-test log data structure” shall also be included in the Extended SMART self-test log with all 48-bit entries.

Description

Bytes

Offset

Self-test log data structure revision number

1

00h

Reserved

1

01h

Self-test descriptor index (7:0)

1

02h

Self-test descriptor index (15:8)

1

03h

Descriptor entry 1

26

04h

Descriptor entry 2

26

1Eh

...

 

 

Descriptor entry 18

26

1D8h

Vendor specific

2

1F2h

Reserved

11

1F4h

Data structure checksum

1

1FFh

 

512

 

Table 78 Extended Self-test log data structure

 

 

These descriptor entries are viewed as a circular buffer. The nineteenth self-test shall create a descriptor entry that replaces descriptor entry 1. The next self-test after that shall create a descriptor entry that replaces descriptor entry 2, etc. All unused self-test descriptors shall be filled with zeros

14.16.3.1Self-test log data structure revision number

The value of this revision number shall be 01h.

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Hitachi HDS723020BLA642 Extended Self-test log sector, Device error count, Self-test log data structure revision number

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.