IEC IEC 62842 Edition 1.0 2015-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Multimedia home server systems - File allocation system with minimized reallocation Systemes de serveur domestique multimedias - Systeme d'allocation de fichiers avecréallocationréduitelepluspossible IEC 62842:2015-09(en-fr) IEC IEC 62842 Edition 1.0 2015-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Multimedia home server systems - File allocation system with minimized reallocation Systemes de serveur domestique multimedias-Systemed'allocation de fichiersavecréeallocationréduitelepluspossible INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.160.60 ISBN 978-2-8322-1029-9 Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agree. Registered trade rk of the Intermational Electrotechnical Con Marque deposee de la Con ission Electrotechnique Internationale IEC62842:2015IEC2015 CONTENTS FOREWORD.. INTRODUCTION 1 Scope.. 2 Normative references 3 Terms, definitions, abbreviations and notation 3.1 Terms and definitions. 3.2 Abbreviations. 3.3 4 Precondition and the policy. 4.1 Preconditions 4.2 Policy.... 5 Method to be applied-CoPo2 6 Explanation of basic method CoPo2 14 6.1 Basics.. 6.2 Two choices to apply CoPo2 to an existing partition scheme. 14 6.2.1 General .... 14 6.2.2 Applying to an existing partition.. 14 6.2.3 Applying to a virtual container partition ..... 6.2.4 Choice conclusion ... 16 Management tables for CoPo2.. 16 6.3 6.3.1 General ..... 16 6.3.2 Region configuration master partition table. 18 6.3.3 Multilevel-divided-partition management tables. 18 6.4 Functions required to implement CoPo2 18 6.4.1 General.. 6.4.2 Initialize... 18 6.4.3 Manage-multilevel-divided-partitions.. 18 7 Considerations on the size of management tables.. 7.1 General.. 19 7.2 Multilevel-divided-partition allocation table size.. 7.2.1 Blu-ray... 7.2.2 HDD 19 8 Applying CoPo2 to UDF 19 8.1 Storage media to be applied 19 8.2 Basics when UDFvolume format is applied to HDD 20 8.3 Basicsto applymanagementtables to UDF .20 8.3.1 Master divided-partition table.... .20 8.3.2 Using the implementation use field of the partition descriptor.. 8.3.3 Multilevel-divided-partition allocation table. 9 Data structures applied to UDF.. ...21 9.1 General..... 9.1.1 Entity identifier 21 9.1.2 IdentifierSuffix .. 21 9.2 Volume structure. 21 9.2.1 Logical volume descriptor.