7.2Sense Data Analysis

7.2.1Error information indicated with sense data

Subsection 7.2.2 onwards explain troubleshooting using sense data.

Table 7.1 lists the definition of sense data. For details of sense data, refer to the SCSI Logical Interface Specifications.

 

 

 

 

Table 7.1 Definition of sense data

 

 

 

 

 

 

Sense data

 

 

 

 

 

 

 

Sense

Sense

 

Sub

Definition

key

Code

 

Sense

 

 

 

 

Code

 

 

 

 

 

 

00

00

 

00

Operation was normal.

 

 

 

 

 

3

0C

 

03

A write to a disk terminated abnormally.

 

 

 

 

 

4

32

 

01

Failed to update the defect list due to a disk medium write error, etc.

 

40

 

xx

An error occurred in power-on self-diagnosis.

 

44

 

xx

A hardware error occurred inside IDD.

 

C4

 

xx

A drive error occurred.

 

 

 

 

 

1

1x

 

xx

A disk read error occurred.

3

1x

 

xx

A disk read error occurred.

 

 

 

 

 

E

1D

 

00

Data discrepancy found by VERIFY command byte check.

 

 

 

 

 

5

2x

 

xx

An SCSI error, such as an invalid operation code, occurred.

 

3D

 

00

The Reserve bit of the IDENTIFY message was set to 1.

 

90

 

00

The RESERVE or RELEASE command cannot be executed because

 

 

 

 

the SCSI ID of the INIT was not posted in the SELECTION phase.

B

47

 

xx

A parity error occurred in the SCSI data bus.

B

49

 

00

An unmounted or inappropriate message was received.

B

4D

 

xx

Before completion of a command, a command with the same tag

 

 

 

 

number was issued.

B

4E

 

00

An overlap command was issued.

 

 

 

 

 

C141-E166

7-3

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Fujitsu MAP3735NP, MAP3147NC/NP, MAP3735NC/NP, MAP3367NC/NP, MAP3367NP manual Definition of sense data

MAP3735NP, MAP3367NC, MAP3735NC/NP, MAP3367NC/NP, MAP3147NC/NP specifications

Fujitsu's MAP3147NC/NP, MAP3367NC/NP, and MAP3735NC/NP hard disk drives represent a robust solution for businesses seeking reliable data storage options. These models are part of Fujitsu’s extensive line of high-performance hard drives that cater to various organizational needs, from servers to high-capacity data storage systems.

One of the standout features of these hard drives is their speed. The MAP3147NC/NP operates at a spindle speed of 10,000 RPM, ensuring rapid data access and retrieval. This speed is essential for environments requiring quick data transactions, making it suitable for enterprise-level databases and high-performance computing applications.

The capacity range across these models is designed to meet varying storage requirements. The MAP3147NC offers 147 GB, while the MAP3367NC provides 67 GB, and the MAP3735NC boasts a generous capacity of 35 GB. This diversity allows organizations to select the drive that best fits their data storage and performance needs while maintaining a scalable storage solution.

In terms of technology, the drives incorporate advanced features such as Serial Attached SCSI (SAS) interface, which enhances data throughput and reliability compared to traditional Parallel SCSI interfaces. SAS technology enables these drives to support multiple device connections while ensuring high-performance throughput, essential for modern enterprise environments.

The drives employ a 64 MB cache, providing a significant performance boost by allowing for quicker access to frequently used data. This capability improves overall system responsiveness, especially in applications requiring high input/output operations per second (IOPS).

Moreover, the MAP3147NC/NP, MAP3367NC/NP, and MAP3735NC/NP series are designed with data integrity in mind. They include features such as Error Correction Code (ECC) and background error scanning, which work together to maintain the integrity of stored data and minimize the risk of data loss.

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