Overview
ISO/IEC 17345:2006 defines the mechanical, physical and optical characteristics for 130 mm Ultra Density Optical (UDO) disk cartridges - first generation, 30 Gbytes per cartridge. It specifies two media types: Type RW (Rewritable) for multiple write/erase cycles and Type WORM (Write Once Read Many) where written marks cannot be erased and attempted modifications are detectable. The standard enables reliable data interchange between compliant disks and drives, including support for multisession (incremental) recording on WORM media.
Key topics and technical requirements
The standard covers detailed requirements necessary for interoperability, including:
- Mechanical and physical characteristics of the 130 mm optical disk cartridge (case and disk dimensions, clamping, drop and ESD tests)
- Optical and reference drive specifications (optical beam, read channel, tracking, rotation)
- Track, sector and format definitions (track pitch, physical track numbers, sector layout, headers, sync, data fields)
- Recording and encoding rules (recording codes, preformatted headers, data fields)
- Formatted and user zone layout (formatted zones, user areas, defect management area, disk definition structures)
- Defect management for RW and WORM (initialization, certification, primary/secondary defect lists)
- Embossed information and signal characteristics (groove/land signals, wobble, mirror area signals)
- Testing methods and environmental requirements (temperature shock, safety, flammability, test patterns)
These topics ensure consistent interchangeability and predictable performance across compliant drives and media.
Applications
ISO/IEC 17345:2006 is intended for use where durable, high-density optical storage and standardized interchange are required:
- Long-term archival storage and digital preservation
- Secure, tamper-evident retention using WORM media for regulatory compliance
- Backup and offline storage in data centers and enterprise IT environments
- Interchangeable media for media manufacturers and optical drive designers
- Libraries, archives, broadcast and government agencies needing consistent physical/media formats
Who uses this standard
- Optical disk and cartridge manufacturers (media production)
- Drive and firmware engineers (drive-reference implementations)
- Systems integrators and IT procurement (specifying archival media)
- Archivists, compliance officers and IT auditors (retention & verification)
- Test labs and certification bodies (conformance testing)
Related standards
For broader context, consult other ISO/IEC optical storage standards and ISO catalogues for successive UDO generations or complementary media formats (e.g., DVD/Blu‑ray related standards). Always reference the official ISO/IEC publication for normative details and conformance criteria.
Keywords: ISO/IEC 17345:2006, UDO, Ultra Density Optical, 130 mm optical disk cartridge, 30 Gbytes, Rewritable, WORM, data interchange, optical media standard.