IEC 62702-1-2:2022 PDF

Overview

IEC 62702-1-2:2022 - Audio archive system: BD disk and data migration for long-term audio data storage defines methods for data-quality assurance and data migration of writable Blu-ray (BD) disks intended for long-term audio preservation. This second edition (2022) is a technical revision that replaces the first edition and aligns the standard with updates to ISO/IEC 29121:2021. The standard covers BD recordable and BD rewritable disks and prescribes tests, lifetime estimation and handling guidance to help sustain recorded audio data over time.

Key topics and technical requirements

• Scope and media: Requirements for writable BD disks used in long-term audio archives (BD-R, BD-RE).
• Lifetime estimation: Procedures and classification of estimated disk lifetime (B life), including estimated-lifetime ranks and display colour identification for packaging and labeling.
• Referee test method: ISO/IEC 16963 is identified as the referee method for estimating optical disk lifetime.
• Test conditions and methods:
  • Ambient conditions for measurement of maximum data error are specified.
  • Initial and periodic performance tests to assess recording and playback reliability.
  • Test drive requirements adapted to realistic user conditions (playback and recording test drives, calibration checks).
  • Measurement of maximum data error metrics such as Max RSER (referenced in test methods).
• Data migration method: Procedures for migrating recorded audio data from aging media to new media to preserve integrity.
• Reporting and management: Defined reporting items for initial and periodic tests, test/migration intervals, and management of results.
• Prevention and handling: Informative annexes cover guidelines for usage, lifetime-rank indication, handling, storage, cleaning, and causes/nature of BD disk deterioration.

Practical applications

• Establishing QA programs for audio archives, libraries, museums, broadcasters and cultural heritage organizations.
• Setting procurement specifications and labeling for BD media intended for archival use.
• Designing migration schedules and test plans to minimize data loss and ensure long-term accessibility of digitized audio content.
• Supporting lab verification and compliance testing for optical media vendors and third‑party preservation services.

Who should use this standard

• Archivists, audio preservation specialists, collection managers
• IT and media asset managers in cultural institutions and broadcasters
• QA laboratories and manufacturers of writable BD media
• Organizations implementing long-term digital preservation and data migration policies

Related standards

• ISO/IEC 16963:2017 - Test method for estimation of lifetime of optical disks
• ISO/IEC 29121:2021 - Data migration method for optical disks for long-term data storage
• ISO/IEC 30190–30193 - BD media format specifications

Keywords: IEC 62702-1-2:2022, BD disk, Blu-ray archival, long-term audio storage, data migration, lifetime estimation, data-quality assurance.