1、Information technology Small computer system interface (SCSI) Part 331:Stream commands (SSC)Reference numberISO/IEC 14776-331:2002(E)National Standard of CanadaCAN/CSA-ISO/IEC 14776-331:04(ISO/IEC 14776-331:2002)International Standard ISO/IEC 14776-331:2002 (first edition, 2002-09) has been adopted
2、without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 14776-331:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-362-3 January 2004The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices this
3、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 furtherStandards system in 1973. It is a not-for-p
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6、s, 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 standard whichfederal governments in thei
7、r 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, companies, and associations across individu
8、als 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 supporting the Associations others with
9、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 together form CSAs total contribution to
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15、adaopen 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 further information on CSA services, writ
16、e toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough 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 for their particular pur
17、pose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 14776-331:04 Part 331: Stream commands (SSC)Information technology Small computer system interface (SCSI) January 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 14776-331:04Information technology Small computer sys
18、tem interface (SCSI) Part 331: Stream commands (SSC)CSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian Advisory Committee
19、 (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada partic
20、ipates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee membership list is avail
21、able on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sales representative.
22、 This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January 2004 Canadian Standards Association 2004All rights reserved. No part of this publication may be reproduced in an
23、y form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada shoul
24、d be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caINTERNATIONALSTANDARDISO/IEC14776-331First edition2002-09Information technology Small computer system interface (SCSI) Part 331:Stream commands (SS
25、C)PRICE CODE ISO/IEC 2002All rights reserved. Unless otherwise specified, no part of this publication may 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 Ca
26、se postale 56 CH-1211 Genve 20 SwitzerlandFor price, see current catalogueX 2 14776-331 ISO/IEC:2002(E)CONTENTSFOREWORD 6INTRODUCTION 71 Scope 82 Normative references. 93 Definitions, symbols and abbreviations . 93.1 Definitions 93.2 Symbols and abbreviations.113.3 Keywords.113.4 Conventions.124 Gen
27、eral.134.1 Overview .134.2 Physical models.135 Sequential-access devices 135.1 Definitions specific to sequential access devices 135.2 Sequential-access device model 165.2.1 Physical elements 165.2.2 Early warning .195.2.3 Partitions within a volume.195.2.4 Logical elements within a partition 215.2.
28、5 Data buffering 225.2.6 Tagged command queuing .225.2.7 Recorded object descriptors (block identifiers)235.2.8 Direction and position definitions 235.2.9 Write protection .255.2.10 Progress indication.275.2.11 TapeAlert application client interface 285.2.12 Device reservations and command behavior.
29、315.3 Command descriptions for sequential-access devices 325.3.1 ERASE command.345.3.2 FORMAT MEDIUM command .345.3.3 LOAD UNLOAD command365.3.4 LOCATE command 385.3.5 READ command.395.3.6 READ BLOCK LIMITS command 415.3.7 READ POSITION command .425.3.8 READ REVERSE command455.3.9 RECOVER BUFFERED D
30、ATA command 465.3.10 REPORT DENSITY SUPPORT command.475.3.11 REWIND command 505.3.12 SPACE command.515.3.13 VERIFY command545.3.14 WRITE command.555.3.15 WRITE FILEMARKS command.5714776-331 ISO/IEC:2002(E) 3 5.4 Parameters for sequential-access devices585.4.1 Diagnostic parameters .585.4.2 Log param
31、eters585.4.3 Mode parameters .606 Printer devices 796.1 Model for printer devices796.2 Commands for printer devices806.2.1 FORMAT command816.2.2 PRINT command826.2.3 RECOVER BUFFERED DATA command 836.2.4 SLEW AND PRINT command.836.2.5 STOP PRINT command .846.2.6 SYNCHRONIZE BUFFER command.846.3 Para
32、meters for printer devices .856.3.1 Diagnostic parameters .856.3.2 Log parameters856.3.3 Mode parameters .86Annex A (informative) Historical density codes94Annex B (normative) TapeAlert log page parameter codes (flags) .96Bibliography 101Figure 1 SCSI standards - general structure. 8Figure 2 Typical
33、 volume layout17Figure 3 Typical medium track layout17Figure 4 Serpentine recording example.18Figure 5 Parallel recording example18Figure 6 Helical scan recording example.18Figure 7 Early-warning example19Figure 8 Partitioning example one partition per track group 20Figure 9 Partitioning example one
34、 partition per two track groups 20Figure 10 Partitioning example two partitions per track group .20Figure 11 SCSI printer model80Table 1 Error conditions and sense keys.24Table 2 Write protect ASC/ASCQ combinations 26Table 3 Commands providing progress indication without changing ready state.27Table
35、 4 Commands changing ready state and providing progress indication 28Table 5 TapeAlert default informational exceptions control page .29Table 6 TapeAlert flag types .30Table 7 TapeAlert flags minimum subset 30Table 8 TapeAlert flag definitions31Table 9 Streaming commands that are allowed in the pres
36、ence of various reservations.32Table 10 Commands for sequential-access devices 33Table 11 ERASE command.34Table 12 FORMAT MEDIUM command .35Table 13 Format field definition.36 4 14776-331 ISO/IEC:2002(E)Table 14 LOAD UNLOAD command37Table 15 LOCATE command 38Table 16 READ command.39Table 17 READ BLO
37、CK LIMITS command 41Table 18 READ BLOCK LIMITS data.41Table 19 READ POSITION command .42Table 20 READ POSITION data format, short form .43Table 21 READ POSITION data format, long form 44Table 22 READ REVERSE command45Table 23 RECOVER BUFFERED DATA command 46Table 24 REPORT DENSITY SUPPORT command .4
38、7Table 25 Density support header 48Table 26 Density support data block descriptor .48Table 27 REWIND command 51Table 28 SPACE command.51Table 29 Code definition.52Table 30 VERIFY command54Table 31 WRITE command.55Table 32 WRITE FILEMARKS command.57Table 33 Diagnostic page codes .58Table 34 Log page
39、codes59Table 35 Parameter codes for sequential-access device page.60Table 36 TapeAlert log page.60Table 37 Device-specific parameter 61Table 38 Buffered modes61Table 39 Speed field definition61Table 40 Sequential-access density codes62Table 41 Mode page codes.63Table 42 Data compression page64Table
40、43 Possible boundaries and resulting sense keys due to data compression .65Table 44 Compression algorithm identifiers.67Table 45 Device configuration page 67Table 46 EOD defined values .69Table 47 Medium partition page(1)71Table 48 PSUM values .72Table 49 Medium format recognition values 74Table 50
41、Medium partition page(2-4).75Table 51 Read-write error recovery page 76Table 52 Informational exceptions control page.78Table 53 TapeAlert test descriptions .78Table 54 Commands for printer devices81Table 55 FORMAT command82Table 56 Format type values.8214776-331 ISO/IEC:2002(E) 5 Table 57 PRINT com
42、mand82Table 58 RECOVER BUFFERED DATA command 83Table 59 SLEW AND PRINT command .83Table 60 STOP PRINT command84Table 61 SYNCHRONIZE BUFFER command .85Table 62 Diagnostic page codes .85Table 63 Log page codes86Table 64 Printer device-specific parameter .86Table 65 Mode page codes.87Table 66 Parallel
43、printer interface .87Table 67 Parity select codes .88Table 68 VFU control byte 88Table 69 Printer options89Table 70 Font identification values89Table 71 Slew mode codes .90Table 72 Line slew codes .90Table 73 Form slew codes 91Table 74 Data termination option codes 91Table 75 Serial printer interfac
44、e92Table 76 Parity selection codes 92Table 77 Pacing protocol codes 93Table A.1 Historical sequential-access density codes94Table B.1 TapeAlert log page parameter codes.96 6 14776-331 ISO/IEC:2002(E)INFORMATION TECHNOLOGY SMALL COMPUTER SYSTEM INTERFACE (SCSI) Part 331: Stream commands (SSC)FOREWORD
45、1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) formthe specialized system for worldwide standardization. National bodies that are members of ISO or IECparticipate in the development of International Standards through technical committees e
46、stablished by therespective organization to deal with particular fields of technical activity. ISO and IEC technical committeescollaborate in fields of mutual interest. Other international organizations, governmental and non-governmental,in liaison with ISO and IEC, also take part in the work.2) In
47、the field of information technology, ISO and IEC have established a joint technical committee,ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to nationalbodies for voting. Publication as an International Standard requires approval by at least 75 %
48、 of the nationalbodies casting a vote.3) Attention is drawn to the possibility that some of the elements of this International Standard may be the subjectof patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.International Standard ISO/IEC 14776-331
49、 was prepared by subcommittee 25: Interconnectionof information technology equipment, of ISO/IEC joint technical committee 1: Informationtechnology.This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.14776-331 ISO/IEC:2002(E) 7 INTRODUCTIONThis standard specifies functional requirements for SCSI-3 Stream commands (S
