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Fujitsu MAS3367, MAP3367, MAP3147, MAS3735, MAP3735 specifications Write Buffer 3B, Lun

Models: MAP3735 MAP3147 MAS3367 MAP3367 MAS3735

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Command Specifications

The description of address information shown in bytes 6 to 13 is the same as the description specifications in the D List transferred from the INIT by the FORMAT UNIT command. For details, see the description of the FORMAT UNIT command (Section 3.3.1). Furthermore, When the logical block format is used, the address is shown in bytes 6 to 9 and zero is reported in the remaining byte positions. However, when the address information specified in the “SEND DIAGNOSTIC command points to a position on the disk media which is not used as physical data blocks, X ‘FFFFFFFF 00000000’ is reported as the logical block address after conversion.

3.4.3WRITE BUFFER (3B)

 

Bit

7

6

5

 

4

 

3

 

2

 

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

X‘3B’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

LUN

 

 

0

 

 

 

 

Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

Buffer ID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Buffer Address (MSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

Buffer Address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

Buffer Address (LSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

Transfer Byte Length (MSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

Transfer Byte Length

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

Transfer Byte Length (LSB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

0

0

0

 

0

 

0

 

0

 

0

Link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This command is used in combination with the READ BUFFER command to diagnose the normality of the IDD’s data buffer memory or the SCSI bus, or to download microcode to the IDD.

The IDD stores data transferred from the INIT in accordance with the specifications in this command's CDB to in the data buffer in the IDD. The IDD have 7,680 K (7,864,320) byte data buffers. This command, using buffer addresses with a range of X'000000' to X'77FFFF', must specify data storage positions in 1-byte units, and with 4-byte units addresses. The INIT can know the IDD's buffer configuration and the units which addresses can be specified in by issuing the READ BUFFER command.

The IDD does not support "Buffer ID" field, and disregards any values to this field.

The functions of this command and the format of data transferred from the INIT are specified in the “Mode” field in byte 1 of the CDB and any of the transfer modes shown below can be selected.

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Fujitsu MAS3367, MAP3367, MAP3147, MAS3735, MAP3735 specifications Write Buffer 3B, Lun
Page 163 Page 165

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.