ISO IEC 11976-2008 PDF

Full title and description

Information technology — Data interchange on 130 mm rewritable and write-once-read-many ultra density optical (UDO) disk cartridges — Capacity: 60 Gbytes per cartridge — Second generation (ISO/IEC 11976:2008). This standard specifies the mechanical, physical and optical characteristics of a 130 mm optical disk cartridge that employs thermo-optical phase-change recording for interoperable data interchange; it defines two disk types (RW and WORM), a two-sided cartridge capacity of 60.0 Gbytes (30.0 Gbytes per side), and the related format, error correction and conformance requirements.

Abstract

ISO/IEC 11976:2008 (UDO2) sets the requirements to enable interchangeability between drives and cartridges for ultra density optical media: cartridge and disk mechanical/dimensional characteristics, optical and thermo-optical behaviour, embossed and user-written information formats (tracks/sectors, modulation and error correction), environmental and storage conditions, conformance testing and the reference drive, and minimum user-written data quality for reliable read-back. The standard formalizes the ECMA-380 UDO2 specification as an ISO/IEC international standard.

General information

• Status: Withdrawn (withdrawal date: 20 July 2020).
• Publication date: 25 November 2008.
• Publisher: ISO and IEC (published under ISO/IEC JTC 1/SC 23 — Digitally Recorded Media for Information Interchange and Storage).
• ICS / categories: 35.220.30 (IT equipment and data storage media).
• Edition / version: Edition 1.0 (2008).
• Number of pages: 141.

Key bibliographic and lifecycle details above are recorded in the ISO/IEC publication catalogue and the IEC webstore.

Scope

This standard specifies the physical, mechanical, optical and recording characteristics necessary to permit interchange of 130 mm UDO media and drives implementing the second-generation UDO (UDO2) format. It covers cartridge dimensions and mechanical interchangeability, the physical disposition of tracks and sectors, the modulation methods and error-correction coding, embossed (factory) and user-written information formats, thermo-optical recording characteristics used for writing, multisession operation for WORM media, environmental and storage conditions, and conformance test conditions including a defined Reference Drive. It is intended to provide full data interchange between data processing systems when used together with applicable volume and file-structure standards.

Key topics and requirements

• Definition of two media types: RW (rewritable) and WORM (write-once-read-many) with multisession support for WORM.
• Mechanical and dimensional specifications for 130 mm cartridge interchangeability (cartridge layout and tolerances).
• Optical and thermo-optical characteristics for phase-change recording and read-back reliability.
• Logical and physical format: track/sector layout, modulation method, ECC and minimum user-written data quality requirements.
• Environmental, handling and storage conditions required for reliable archival retention and interchange.
• Conformance testing procedures and definition of a Reference Drive for testing interoperability.
• Nominal capacity: 60.0 Gbytes per cartridge (two-sided, 30.0 Gbytes per side).

Typical use and users

Typical users include archival storage vendors, enterprise IT and backup/archive teams, libraries and cultural heritage organizations, manufacturers of optical drives and media, system integrators deploying long-term offline archives, and compliance officers specifying media for regulated retention. The standard was primarily targeted at organizations needing long-term, offline, removable archival media with strong media interchange guarantees (UDO-based archival systems).

Related standards

ISO/IEC 11976:2008 is the international adoption of ECMA-380 (the UDO2 specification) and sits alongside other ISO/IEC and ECMA standards for digitally recorded media and optical cartridges. Relevant families include Ecma/ISO specifications for digitally recorded media and other ISO/IEC JTC 1/SC 23 deliverables addressing media interchange and file/volume structures. Users should consult ECMA-380 for the originating technical specification and the ISO/IEC catalogue for any successor or replacement publications.

Keywords

UDO2, Ultra Density Optical, UDO, optical disk cartridge, 130 mm cartridge, 60 GB, WORM, RW, archival storage, thermo-optical phase change, ECMA-380, ISO/IEC JTC 1/SC 23.

FAQ

Q: What is this standard?

A: ISO/IEC 11976:2008 specifies the second-generation Ultra Density Optical (UDO2) 130 mm optical disk cartridge format (60 GB per cartridge) covering mechanical, physical, optical, recording and conformance requirements to enable media interchange.

Q: What does it cover?

A: It covers cartridge and disk mechanical/dimensional characteristics, optical and thermo-optical recording properties, the physical layout of tracks and sectors, modulation and error-correction methods, embossed and user-written information formats, environmental/storage conditions and conformance testing (including a Reference Drive).

Q: Who typically uses it?

A: Archival and backup solution providers, data center and enterprise archivists, libraries and cultural heritage repositories, optical drive and media manufacturers, and system integrators building long-term removable archives.

Q: Is it current or superseded?

A: ISO/IEC 11976:2008 has been withdrawn (withdrawal date recorded as 20 July 2020). Organizations relying on UDO media should check the ISO/IEC catalogue and vendor guidance for any replacement, updates or maintained specifications and for guidance on media support and migration.

Q: Is it part of a series?

A: It is part of the body of standards for digitally recorded media under ISO/IEC JTC 1/SC 23 and is the ISO/IEC adoption of Ecma-380 (the ECMA specification for UDO2). As such it is related to other ECMA and ISO/IEC standards addressing media formats, volume/file structures and long-term archival recording.

Q: What are the key keywords?

A: UDO2, Ultra Density Optical, 130 mm cartridge, 60 GB, WORM, rewritable, archival storage, ECMA-380, thermo-optical phase change.