1 on disk 0:6:5:0

A SCSI Sense Codes

SCSI Status Codes, Sense Keys, and Sense/Qualifier Code Pairs

This appendix contains tables listing SCSI Status Codes, SCSI Sense Keys, and a partial list of the most common SCSI Additional Sense Code/Qualifier Code Pairs. This information is used to interpret SCSI error messages.

Example A-1shows a typical SCSI error message:

Example A-1 Typical SCSI Error Message

[+6708 72410001 002a9858 0:7] scsi disk: CHECK CONDITION Read of logical block 509856, count 128

disk sd45a, block 254920, 65536 bytes Valid = 1, Error code = 0x70

Segment number = 0x00, Filemark = 0, EOM = 0, ILI = 0 Sense key = 0x6, "UNIT ATTENTION" 2

Information = 0x00 0x07 0xc7 0xe4

[+6709 72410001 002a9a10 0:7] scsi disk: Additional sense length = 0x0a Command-specific information = 0x00 0x00 0x00 0x00

Additional sense = 0x29, Qualifier = 0x02 3 Field replaceable unit code = 0xea

SKSV = 1, C/D = 0, BPV = 0, Bit pointer = 0 Field pointer = 0x0003

1 Status, with interpretation

2 Sense key, with

(CHECK CONDITION)

interpretation (UNIT

 

ATTENTION).

3Additional Sense and Qualifier, without interpretation.

The status and sense key are interpreted for you in the error message text. Table A-1: “SCSI Status

Codes (complete list)” (page 65) and Table A-2: “SCSI Sense Keys (complete list)” (page 66) provide a complete listing of the SCSI Status Codes and the SCSI Sense Keys.

Each Additional Sense and its corresponding Qualifier Code require interpretation on your part. Use the two codes together to determine their meaning from Table A-3: “Most Common SCSI Additional Sense Code/Qualifier Pairs” (page 66).

In Example A-1, the Additional Sense Code (0x29) and Qualifier Code (0x02) together mean: “SCSI bus reset occurred.”

Table A-3 (page 66) lists the most common Additional Sense Code/Qualifier Code Pairs. For a comprehensive list of all Additional Sense Code/Qualifier Code Pairs, go to:

http://www.t10.org/ftp/t10/drafts/spc2/spc2r20.pdf

Table A-1 SCSI Status Codes (complete list)

SCSI Status Code

Meaning

0x00

Good

0x02

Check condition

0x04

Condition met

0x08

Busy

0x10

Intermediate

0x14

Intermediate—condition met

0x18

Reservation conflict

0x22

Command terminated

0x28

Queue full

SCSI Status Codes, Sense Keys, and Sense/Qualifier Code Pairs 65

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HP Ultra320 A7173A Scsi Sense Codes, Example A-1 Typical Scsi Error Message, Table A-1 Scsi Status Codes complete list

Ultra320 A7173A specifications

The HP Ultra320 A7173A is a high-performance Storage Area Network (SAN) component, widely recognized for its reliability and efficiency in data storage solutions. Designed to support the demands of enterprise-level applications, this SCSI (Small Computer System Interface) controller excels in providing fast and reliable data transfer, making it a preferred choice for businesses that require robust storage solutions.

One of the standout features of the A7173A is its ultra-fast data transfer rate. It is capable of achieving speeds of up to 320 MB/s, which is made possible through the Ultra320 SCSI technology. This speed enhancement is crucial for applications requiring quick access to large volumes of data, thus improving overall system performance. The controller maintains compatibility with previous SCSI standards, allowing for interoperability in diverse environments and ensuring that organizations can leverage their existing infrastructure.

The A7173A is built on advanced technologies that enhance its performance and reliability. These include intelligent data buffering and error correction mechanisms, which minimize the likelihood of data loss and improve the integrity of information during transfers. Additionally, the controller features multiple device connections, accommodating up to 15 devices on a single chain. This scalability offers flexibility in expanding storage solutions based on organizational needs.

Another significant characteristic of the HP Ultra320 A7173A is its support for a wide range of operating systems. The controller is versatile, allowing it to integrate seamlessly with numerous enterprise platforms. This broad compatibility ensures that IT departments can deploy the A7173A within their existing environments without major adjustments or additional costs.

Moreover, the A7173A comes with comprehensive management features, enabling administrators to monitor and optimize storage performance effectively. These features help in anticipating issues before they escalate, thereby minimizing downtime and facilitating smoother operations.

In essence, the HP Ultra320 A7173A is a comprehensive SAN solution that offers exceptional speed, reliability, and scalability. Its advanced technologies and versatile compatibility make it an ideal component for organizations looking to optimize their data storage infrastructure while ensuring robust performance across diverse applications. Investing in the A7173A can lead to marked improvements in data management, ultimately contributing to business efficiency and continuity.