Command Specifications

processing is not prohibited, even if a correctable data check is detected during the verify check, it is regarded as if the verify check succeeded.

3.2.6

VERIFY (2F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

7

6

5

 

4

 

3

 

2

1

0

 

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

X‘2F’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

LUN

 

 

 

0

 

0

BytChk

0

 

 

 

 

 

 

 

 

 

 

 

2

 

 

Logical Block Address (MSB)

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Logical Block Address

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

Logical Block Address

 

 

 

 

 

 

 

 

 

 

 

5

 

 

Logical Block Address (LSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

0

0

0

0

0

 

0

0

0

 

 

 

 

 

 

 

 

7

 

 

Transfer Block Count (MSB)

 

 

 

 

 

 

 

 

 

 

8

 

 

Transfer Block Count (LSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

0

0

0

0

0

 

0

0

Link

 

 

 

 

 

 

 

 

 

 

 

 

 

This command reads the number of continuous logical data blocks specified in the "Block count" field with the logical data block on the disk media which is specified in the "Logical block address" field in the CDB as the top, then executes a VERIFY check on those data.

The "Block count" field in the CDB specifies the number of data blocks which is the object of the VERIFY check. When zero is specified in the "Transfer block count," the command is terminated normally without performing seek and pre-fetch.

Bit 4 of CDB byte 1 is disabled in the IDD and the specified value is disregarded.

If "1" is specified in bit 1 of CDB byte 1, the BytChk bit, the IDD compare the data read from the disk media with the data transferred from the INIT. If the data do not match during this mode, the command is terminated with a CHECK CONDITION status (MISCOMPARE [=E] / Miscompare during verify operation [=1D-00]).

If "0" is specified in bit 1 of CDB byte 1, the BytChk bit, an ECC (data portion) normalcy check is executed. Also, error recovery processing during execution of the verify check is according to the mode specified by the MODE SELECT parameter (verify error recovery parameter). For example, if data correction processing is not prohibited, even if a correctable data check is detected, it is regarded as if the verify check succeeded.

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Fujitsu MAS3735, MAP3367, MAP3147, MAP3735, MAS3367 specifications Verify 2F

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.