Parameter Data Formats

The "Interval Timer" field indicates the period in 100 millisecond increments for reporting that an informational exception condition has occurred. The target does not report informational exception conditions more frequency than the time specified by the "Interval Timer" field and as soon as possible after the timer interval has elapsed. After the informational exception condition has been reported the interval timer is restarted. A value of zero in the "Interval Timer" field indicates that the target shall only report the informational exception condition one time. A value of X’FFFFFFFF’ in the "Inteval Timer" field indicates the timer interval is vendor specific.

In the implementation, actual period unit to be used in reporting information exception condition is minute. Therefore a value is rounded-up to minute as shown below. a value of zero and X’FFFFFFFF’ in the interval timer field indicates that drive report the information exception condition once.

A value of TIMER INTERVAL field

Actual time interval (minutes)

 

 

0, 0xFFFFFFFFh

Drive reports the informatinal exception

 

condition once

1-600

1

601-1200

2

1201-1800

3

0xFFFFFE11-0xFFFFFFFE

7158279

The "Report Count" field indicates the number of timer to report an informational exception conditions to the application client. A value of zero in the Report Count field indicates there is no limit on the number of timers the target shall report an information exception condition.

4.1.10Additional error recovery parameters (page code = 21)

The page descriptor format of this MODE SELECT parameter is shown in Figure 4.9

[Fujitsu unique parameter]

 

Bit

7

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

1

0

0

 

0

0

1

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

X‘02’ (Page Length)

 

 

 

 

 

 

 

 

 

 

 

 

2

0

0

RPR

 

0

 

Number of retries during a Seek Error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

0

0

0

 

0

 

1

 

1

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Variable

0

0

0

 

0

 

1

 

1

1

1

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

RFJ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

0

0

0

0

0

 

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

Variable

0

0

0

0

0

 

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 4.9 MODE SELECT parameters: additional error recovery parameters

4 - 36

C141-E167

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Image 212
Fujitsu MAS3735, MAP3367, MAP3147, MAP3735, MAS3367 Value of Timer Interval field Actual time interval minutes, Rpr, Rfj
Page 211 Page 213

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.
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