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ISO/IEC 29121-2009
Information technology -- Digitally recorded media for information interchange and storage -- Data migration method for DVD-R, DVD-RW, DVD-RAM, +R, and +RW disks
适用范围：ISO/IEC 29121:2009 provides specifications of the data migration method for archival data storage which allow manufacturers storage systems that use DVD-R (ISO/IEC 23912:2005), DVD-RW (ISO/IEC 17342:2004), DVD-RAM (ISO/IEC 17592:2004), +R (ISO/IEC 17344:2006 and ISO/IEC 25434:2007), and +RW (ISO/IEC 17341:2006 and ISO/IEC 26925:2006) disks for information storage to classify disk longevity potential on the basis of initial performance requirements and to allow users to monitor continuing conformance with the error limits required for its class identified by the manufacturer of the drive/disk. Digital data can be migrated to a next new disk without loss from the present disk as far as the data errors are completely corrected before and during the migration and the copy of the data is allowed. The methodology for data migration does not apply to disks with short archival storage time but to disks with long archival storage time.
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