Sense Data Error Recovery Methods

 

 

Table 5.2

Sense and subsense codes (1 of 5)

 

 

 

 

 

 

 

C*

Q*

Name

 

Explanation

Sense

 

key

 

 

 

 

 

 

 

 

 

 

00

00

No additional sense

No specific sense code exists.

0

 

 

information

 

 

 

 

 

 

 

 

 

06

I/O process terminated

I/O was interrupted by the Terminated I/O Process message.

0

 

 

 

 

 

01

00

No index/sector signal

The target sector was not detected by the sector counter within the

4

 

 

 

specified time.

 

 

 

 

 

 

03

00

Peripheral device write

A write operation to the disk media was terminated abnormally.

1, 3, B

 

 

fault

Off track during write.

 

 

 

 

 

 

 

80

Peripheral device write

A write operation to the disk media was terminated abnormally.

4, B

 

 

fault

• Write current abnormality

 

 

 

 

 

 

 

82

Peripheral device write

A write operation to the disk media was terminated abnormally.

1, 3, B

 

 

fault

• Servo mark not found during write.

 

 

 

 

 

 

 

83

Peripheral device write

A write operation to the disk media was terminated abnormally.

4, B

 

 

fault

• Servo cell detected was detected during write.

 

 

 

 

• Write gate and sector pulse were activated at the same time

 

 

 

 

during write.

 

 

 

 

 

 

04

01

Logical unit in process of

Disk drive is getting ready.

2

 

 

becoming ready

(The spindle motor is not at its regular rotation speed or has reached

 

 

 

 

its regular rotation speed but is still reading the information)

 

 

 

 

 

 

 

02

Logical unit not ready

Disk drive is in start command waiting state.

2

 

 

 

(initializing command required)

 

 

 

 

 

 

 

04

Logical unit not ready,

The drive cannot be accessed since it is being formatted.

2

 

 

format in progress

 

 

 

 

 

 

 

 

 

09

Logical unit not ready,

The drive cannot be accessed since it is being Self-Test.

2

 

 

Self-Test in progress

 

 

 

 

 

 

 

 

0B

01

Specified temperature

Temperature exceeded established value.

0, 1, 6

 

 

exceeded

 

 

 

 

 

 

 

 

0C

01

Write error recovered with

A write error was recovered with auto reallocation.

1

 

 

auto reallocation

 

 

 

 

 

 

 

 

 

02

Write error – auto

Write auto reallocation or the write that was applied to auto

3

 

 

reallocation failed

reallocation was failed.

 

 

 

 

 

 

 

03

Write Error

Unrecovered Write Offtrack Error

3

 

 

 

• Write retries are exhausted in case of AWRE = 0

 

 

 

 

 

 

 

80

Write Error

Reported if a write offtrack occurred during the Format unit

3

 

 

• Unrecovered Write

command execution.

 

 

 

 

 

 

 

 

Offtrack Error

 

 

 

 

 

Write offtrack retries are

 

 

 

 

 

exhausted.

 

 

 

 

 

 

 

 

11

00

Unrecovered Read Error

Unrecovered read error occurs during reading data field (LBA

3

 

 

 

Miscompare Error detected by SCSI portion)

 

 

 

 

 

 

 

01

Read retries exhausted

Unrecovered error was detected during data read (retry out).

3, B

 

 

 

 

 

 

02

Error too long to correct

Unrecovered error was detected during data read (BCRC error

3, B

 

 

 

detected by SCSI)

 

 

 

 

 

 

 

04

Unrecovered read error,

Auto allocation failed during read.

3

 

 

auto reallocation failed

 

 

 

 

 

 

 

 

 

*C: Sense Code, Q: Sub-sense Code

5 - 6

C141-E167

Page 240
Image 240
Fujitsu MAP3367, MAP3147, MAS3735, MAP3735, MAS3367 specifications Sense and subsense codes 1

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.