Parameter Data Formats

Table 4.1 Combinations of error recovery flags (2 of 3)

EER

PER

DTE

DCR

 

Error Recovery Procedure

 

 

 

 

 

 

0

1

1

0

1.

Rereading is tried repeatedly up to the number of times specified in the "Read

 

 

 

 

 

Retry Count", "Write Retry Count" or "Verify Retry Count" parameter. If

 

 

 

 

 

possible, data correction is executed afterward according to the ECC.

 

 

 

 

2.

When error recovery has succeeded, or even when recovery is impossible,

 

 

 

 

 

execution of the command is terminated with a CHECK CONDITION status at

 

 

 

 

 

the point when error recovery processing is completed, and the sense data

 

 

 

 

 

indicate the data block address where that error occurred.

 

 

 

 

3.

Transfer to the INIT of data in blocks with recovered errors is done, but transfer

 

 

 

 

 

to the INIT of data blocks in which the errors were unrecoverable is done in

 

 

 

 

 

accordance with the specification in the TB bit (read commands).

 

 

 

 

 

 

0

1

1

1

1.

Rereading is tried repeatedly up to the number of times specified in the "Read

 

 

 

 

 

Retry Count", "Write Retry Count" or "Verify Retry Count" parameter. Data

 

 

 

 

 

correction is not executed according to the ECC.

 

 

 

 

2.

When error recovery has succeeded, or even when recovery is impossible,

 

 

 

 

 

execution of the command is terminated with a CHECK CONDITION status at

 

 

 

 

 

the point when error recovery processing is completed, and the sense data

 

 

 

 

 

indicate the data block address where that error occurred.

 

 

 

 

3.

Transfer to the INIT of data in blocks with recovered errors is done, but transfer

 

 

 

 

 

to the INIT of data blocks in which the errors were unrecoverable is done in

 

 

 

 

 

accordance with the specification in the TB bit (read commands).

 

 

 

 

 

 

1

0

0

0

1.

When a correctable data check is detected, immediately, correction is executed

 

 

 

 

 

according to the ECC. For data checks which cannot be corrected, rereading is

 

 

 

 

 

tried repeatedly up to the number of times specified in the "Read Retry Count",

 

 

 

 

 

"Write Retry Count" or "Verify Retry Count" parameter. However, if a

 

 

 

 

 

correctable error is detected during reading, data correction is executed at that

 

 

 

 

 

point according to the ECC.

 

 

 

 

2.

When error recovery has succeeded, processing of the command is continued.

 

 

 

 

3.

The contents of recovered errors are not reported.

 

 

 

 

4.

If unrecoverable errors have been detected, execution of that command is

 

 

 

 

 

terminated at that point.

 

 

 

 

5.

Transfer of data in blocks which include unrecoverable errors to the INIT is

 

 

 

 

 

done in accordance with the specification in the TB bit (read commands).

 

 

 

 

 

 

1

0

0

1

 

(Setting prohibited) (See *1 at the end of this table.)

 

 

 

 

 

 

1

0

1

0

 

(Setting prohibited) (See *1 at the end of this table.)

 

 

 

 

 

 

1

0

1

1

 

(Setting prohibited) (See *1 at the end of this table.)

 

 

 

 

 

 

4 - 8

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Fujitsu MAS3367, MAP3367, MAP3147, MAS3735, MAP3735 specifications Combinations of error recovery flags 2

MAP3735, MAP3147, MAS3367, MAP3367, MAS3735 specifications

Fujitsu, a renowned leader in technology and innovation, has developed a variety of reliable hard disk drives (HDDs) that cater to a wide range of data storage needs. Among these, the MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series stand out for their advanced features and exceptional performance.

The MAS3735 is a high-capacity enterprise-class drive that boasts a storage capacity of up to 300 GB. Its 10,000 RPM spindle speed ensures rapid data retrieval and efficient performance, making it ideal for data-intensive applications. It utilizes a Serial Attach SCSI (SAS) interface, which allows for improved data transfer rates and increased reliability compared to traditional SATA drives. The drive is designed with advanced technologies such as error recovery and data integrity features, ensuring the safety and security of critical data.

Similarly, the MAP3367 and MAS3367 models are geared towards both enterprise and mid-range server environments, providing a storage capacity of up to 300 GB as well. These drives also operate at a spindle speed of 15,000 RPM, offering swift access times that enhance overall system performance. The MAP3367 employs the Ultra 320 SCSI interface, allowing for significant bandwidth and ensuring data is transmitted efficiently.

On the other hand, both MAP3147 and MAP3735 models provide versatile solutions for various applications, supporting capacities from 36 GB to 147 GB. The MAP3147, with its 10,000 RPM speed, is optimized for workloads requiring quick access and high throughput, making it suitable for transactional systems and enterprise applications. The MAP3735, while offering comparable capacity, emphasizes exceptional reliability and durability, which is crucial for environments that involve heavy data loads.

All these Fujitsu HDDs are characterized by their robust construction, reliability, and efficiency. They are built to withstand heavy workloads and are equipped with features like advanced thermal management and acoustic noise reduction, ensuring they operate effectively in data center environments.

In conclusion, Fujitsu's MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series HDDs are designed for high performance and reliability, catering to both enterprise and mid-range environments. Their advanced features make them a strong choice for businesses looking to enhance their storage solutions while maintaining data integrity and system performance.