CAN CSA-ISO IEC 14776-411-2002 Information technology - SCSI-3 Architecture Model (SCSI-3 SAM).pdf

1、 National Standard of CanadaCAN/CSA-ISO/IEC 14776-411:02(ISO/IEC 14776-411:1999)International Standard ISO/IEC 14776-411:1999 (first edition, 1999-09), has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 14776-411:02, which has been approved as a National Standard ofCanada by

2、the Standards Council of Canada.ISBN 1-55324-675-6 March 2002Information technology SCSI-3 Architecture Model(SCSI-3 SAM)Technologies de linformation Modle darchitecture SCSI-3 (SCSI-3 SAM)Reference numberISO/IEC 14776-411:1999(E)The Canadian Standards Association (CSA), The Standards Council of Can

3、ada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the National organizations working towards the furtherStandar

4、ds system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification The principal objects of the Council are to foster activities. and promote vol

5、untary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers, unions and professional and protecting the consumer

6、, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often adopted by municipal, provincial, and A National Standard of Canada is a stand

7、ard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the environment. agreement among the views of a number of capableIndividuals, compani

8、es, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to representation of producers, users, consumers, andCSA Committee work and supp

9、orting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships toge

10、ther form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates that a standard conforms to theincome for CSAs standards development activiti

11、es. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content of the standard; this remains thestandards development activities. To ensure t

12、he continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply standards arethat bear the CSA Mark. encouraged to use National Standards of

13、CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres across Canada and inspection and testing to obtain the latest edition from the

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15、 provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For furth

16、er information on CSA services, write toCanadian Standards Association178 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability

17、 for their particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 14776-411:02 Information technology SCSI-3 Architecture Model (SCSI-3 SAM)March 2002 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 14776-411:02Information technology SCSI-3Architecture Model (S

18、CSI-3 SAM)CSA PrefaceStandards development within the Information Technology sector is harmonized with international standardsdevelopment. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve asthe Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committe

19、e 1 on Information Technology(ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor ofthe Canadian National Committee of the IEC. Also, as a member of the International TelecommunicationUnion (ITU), Canada participates in the International Telegraph and

20、Telephone Consultative Committee(ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the Strategic SteeringCommittee on Information Technology and deemed acceptable for use in Canada. (A committee membershiplist is available on request from the CSA Project Manag

21、er.) From time to time, ISO/IEC may publish addenda,corrigenda, etc. The CSA TCIT will review these documents for approval and publication. For a listing, refer tothe CSA Information Products catalogue or CSA Info Update or contact a CSA Sales representative. ThisStandard has been formally approved,

22、 without modification, by these Committees and has been approved as aNational Standard of Canada by the Standards Council of Canada.March 2002 Canadian Standards Association 2002All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of

23、thepublisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in the text, theyshould be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 1

24、78 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R31-800-463-6727 416-747-4044www.csa.caINTERNATIONALSTANDARDISO/IEC14776-411First edition1999-09Information technology SCSI-3 Architecture Model(SCSI-3 SAM)Technologies de linformation Modle darchitecture SCSI-3 (SCSI-3 SAM)Reference numberISO/IEC

25、14776-411:1999(E)Numros des publicationsDepuis le 1er janvier 1997, les publications de la CEIsont numrotes partir de 60000.Publications consolidesLes versions consolides de certaines publications dela CEI incorporant les amendements sont disponibles.Par exemple, les numros ddition 1.0, 1.1 et 1.2in

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28、es, se trouvent dans les documents ci-dessous: Site web de la CEI* Catalogue des publications de la CEIPubli annuellement et mis jour rgulirement(Catalogue en ligne)* Bulletin de la CEIDisponible la fois au site web de la CEI* etcomme priodique imprimTerminologie, symboles graphiqueset littrauxEn ce

29、 qui concerne la terminologie gnrale, le lecteurse reportera la CEI 60050: Vocabulaire Electro-technique International (VEI).Pour les symboles graphiques, les symboles littrauxet les signes dusage gnral approuvs par la CEI, lelecteur consultera la CEI 60027: Symboles littraux utiliser en lectrotechn

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32、endments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept underconstant review by the IEC, thus ensuring that thecontent reflects current technology.Information relating to the date of the reconfirmation ofthe publication is available in the IEC catalogue.Informa

33、tion on the subjects under consideration andwork in progress undertaken by the technicalcommittee which has prepared this publication, as wellas the list of publications issued, is to be found at thefollowing IEC sources: IEC web site* Catalogue of IEC publicationsPublished yearly with regular updat

34、es(On-line catalogue)* IEC BulletinAvailable both at the IEC web site* and as aprinted periodicalTerminology, graphical and lettersymbolsFor general terminology, readers are referred toIEC 60050: International Electrotechnical Vocabulary(IEV). For graphical symbols, and letter symbols and signsappro

35、ved by the IEC for general use, readers arereferred to publications IEC 60027: Letter symbols tobe used in electrical technology, IEC 60417: Graphicalsymbols for use on equipment. Index, survey andcompilation of the single sheets and IEC 60617:Graphical symbols for diagrams.* See web site address on

36、 title page.INTERNATIONALSTANDARDISO/IEC14776-411First edition1999-09Information technology SCSI-3 Architecture Model(SCSI-3 SAM)Technologies de linformation Modle darchitecture SCSI-3 (SCSI-3 SAM)PRICE CODE ISO/IEC 1999All rights reserved. Unless otherwise specified, no part of this publication may

37、 be reproduced or utilized in any form or by anymeans, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 SwitzerlandWFor price, see current catalogue ii 14776-411 ISO/IEC:1999(E)C

38、ONTENTSForewordviIntroduction vi1 Scope 12 Normative References . 13 Definitions and Conventions. 13.1 Definitions 13.2 References to SCSI Standards . 73.3 Acronyms and Abbreviations. 73.4 Editorial Conventions 73.5 Numeric Conventions . 83.6 Reserved Fields and Code Values 83.7 Objects and Object N

39、otation . 83.7.1 Notation for Objects 83.7.2 Object Addresses and Identifiers . 103.7.3 Predefined Objects 103.7.4 Hierarchy Diagrams . 113.8 Notation for Procedures and Functions . 113.9 State Diagram . 134 SCSI-3 Architecture Model . 144.1 Introduction 144.2 The SCSI-3 Distributed Service Model .

40、154.3 The SCSI-3 Client-Server Model . 164.4 The SCSI-3 Structural Model . 174.5 SCSI Domain 184.5.1 Synchronizing Client and Server States . 204.5.2 Request/Response Ordering . 214.6 SCSI Device Models. 224.6.1 SCSI Initiator Model. 234.6.2 SCSI Target 244.6.3 The Task Manager 244.6.4 Logical Unit

41、. 254.7 The SCSI-3 Model for Distributed Communications . 275 SCSI Command Model. 315.1 Remote Procedure for SCSI Command Execution. 315.2 Command Descriptor Block 325.2.1 Operation Code . 335.2.2 Control Field 345.3 Status 355.4 Protocol Services in Support of Execute Command. 365.4.1 Data Transfer

42、 Protocol Services 375.4.2 Data-In Delivery Service 385.4.3 Data-Out Delivery service 3914776-411 ISO/IEC:1999(E) iii 5.5 Task and Command Lifetimes 395.6 Command Processing Examples. 405.6.1 Unlinked Command Example 405.6.2 Linked Command Example 415.7 Command Processing Considerations and Exceptio

43、n Conditions. 435.7.1 Auto Contingent Allegiance 435.7.1.1 Logical Unit Response to Auto Contingent Allegiance 435.7.1.2 Clearing an Auto Contingent Allegiance Condition . 445.7.2 Overlapped Commands . 445.7.3 Incorrect Logical Unit Selection 455.7.4 Sense Data . 455.7.4.1 Asynchronous Event Reporti

44、ng . 465.7.4.2 Autosense 475.7.5 Unit Attention Condition . 475.7.6 Hard Reset 486 Task Management Functions . 496.1 Remote Procedure for Task Management Functions . 496.2 ABORT TASK. 506.3 ABORT TASK SET . 516.4 CLEAR ACA . 516.5 CLEAR TASK SET 516.6 TARGET RESET 526.7 TERMINATE TASK. 526.8 Task Ma

45、nagement Protocol Services 536.9 Task Management Function Example . 547 Task Set Management. 557.1 Terminology . 557.2 Task Management Events 557.3 Task Abort Events 567.4 Task States 567.4.1 Enabled. 567.4.2 Blocked . 577.4.3 Dormant 577.4.4 Ended . 577.5 Task Attributes . 577.5.1 SIMPLE Task 587.5

46、.2 ORDERED Task . 587.5.3 HEAD OF QUEUE Task. 587.5.4 ACA Task 587.6 Task State Transitions 587.7 Task Set Management Examples 597.7.1 Blocking Boundaries 607.7.2 HEAD OF QUEUE Tasks . 607.7.3 Ordered Tasks 627.7.4 ACA Task 637.7.5 Deferred Task Completion . 65 iv 14776-411 ISO/IEC:1999(E)Object Def

47、initionsObject Definition 1: SCSI Domain (figure 9) . 19Object Definition 2: Service Delivery Subsystem (figure 10) . 20Object Definition 3: SCSI Device (figure 12). 23Object Definition 4: Initiator . 23Object Definition 5: Target (figure 13) 24Object Definition 6: Logical Unit (figure 14) 25Object

48、Definition 7: Task . 26FiguresFigure 1 Requirements Precedence. viFigure 2 Example of Hierarchy Diagram . 11Figure 3 State Diagram 13Figure 4 Client-Server Model 15Figure 5 SCSI Client-Server Model. 16Figure 6 SCSI I/O System and Domain Model. 17Figure 7 SCSI Hierarchy. 18Figure 8 Domain Functional

49、Model . 18Figure 9 Domain Hierarchy. 19Figure 10 Service Delivery Subsystem Hierarchy 20Figure 11 SCSI Device Functional Models 22Figure 12 SCSI Device Hierarchy Diagram . 22Figure 13 Target Object Hierarchy 24Figure 14 Logical Unit Object Hierarchy 25Figure 15 Protocol Service Reference Model 28Figure 16 Protocol Service Model. 29Figure 17 Request-Response ULP Transaction and Related LLP Services 30Figure 18 Model for buffered data tra