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Fujitsu MAP3367, MAP3147, MAS3735, MAP3735 Error recovery processing procedures 5, Error logging

Models: MAP3735 MAP3147 MAS3367 MAP3367 MAS3735

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5.2 INIT Error Recovery Methods (Recommended)

 

 

Table 5.4

Error recovery processing procedures (5 of 5)

 

 

 

 

 

Recovery

 

 

Recovery processing procedure

 

method

 

 

 

 

 

 

 

 

 

 

 

26

1)

Issue the LOG SENSE command and read the "Current" values of the LOG SELECT

 

 

 

parameters.

 

 

 

2)

Search for any parameter values which exceed the threshold value or have reached the

 

 

 

maximum value, then issue the LOG SELECT command from the INIT and perform

 

 

 

resetting.

 

 

 

3)

Reissue the original command.

 

 

 

 

 

27

1)

Issue the INQUIRY command and read the operation mode information.

 

 

2)

If the parameter values are appropriate, reissue the original command.

 

 

Note This error could also be caused by a UNIT ATTENTION condition being generated,

 

 

 

caused by a programming error of another INIT, so when the values in the parameters

 

 

 

read in ( are illegal, recovery method 2 should be performed, or the operations of the

 

 

 

other INITs should be confirmed.

 

 

 

 

 

 

5.2.3Error logging

In order to collect information that is effective in maintenance, it is desirable for the INIT to accumulate (log) error information related to the SCSI bus which it has detected itself (BUS FREE error, command completion wait time-out, etc.) and error information reported by the IDD.

By specifying "1" in the PER bit in the "Read/Write Error Recovery parameter (Page 1) and the "Verify Error Recovery parameter (Page 7) of the MODE SELECT or MODE SELECT EXTENDED command, the INIT can know of the occurrence of errors which were recovered from successfully by the IDD's internal error recovery processing and their contents. By logging that error information, the INIT can obtain data for more detailed analysis of the disk drive's operating condition.

Concerning the contents of the error log, it is recommended that the data have a time stamp affixed so that they can be edited in a time series of the times the errors were detected, and that they include the following information.

•The source which issued the command and the SCSI ID of the SCSI device which was the target of the command.

•The CDB which was issued.

•The receiving status, or, when the status was that the command could not be received, the code showing the type of error detected by the INIT and its content.

•All bytes reported by the IDD.

C141-E167

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Fujitsu MAP3367, MAP3147, MAS3735, MAP3735, MAS3367 specifications Error recovery processing procedures 5, Error logging
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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.