Subscribe to updates

ISO/IEC 22051:2002

Information technology -- Data interchange on 12,7 mm, 448-track magnetic tape cartridges -- SDLT1 format

This standard has been reviewed and then confirmed in 2009 
More information

ISO standards are reviewed every five years


Media and price

Format Price Language
PDF CHF 178,00 Add to basket
Paper CHF 178,00 Add to basket

Note: The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site



ISO/IEC 22051:2002 specifies the physical and magnetic characteristics of magnetic tape cartridges, using magnetic tape 12,65 mm wide so as to provide physical interchange of such cartridges between drives. It also specifies the quality of the recorded signals, the recording method and the recorded format, thereby allowing data interchange between drives by means of such cartridges.

The linearly recorded format, called Super Digital Linear Tape 1 (SDLT 1), has 448 tracks. It uses a combination of magnetic and optical technologies known as Laser-Guided Magnetic Recording (LGMR). The back surface of the tape presents optically detected servo marks.

The format is derived from the DLT Format. It provides for a capacity of 110 Gbytes of uncompressed user data, or typically 220 Gbytes of compressed user data.

Together with a standard for volume and file structure this document provides for full data interchange between data processing systems.


  • Edition: 1 (Monolingual) ICS: 35.220.23
    Status: Published Stage: 90.93 (2009-03-02)
    TC/SC: ISO/IEC JTC 1/SC 23 Number of Pages: 59
  • No revision information available

  • No corrigenda or amendments available

Preview and follow ISO/IEC 22051:2002 on our Online Browsing Platform


Contact customer services

Send your enquiry by email
or call us on +41 22 749 08 88
09:00 – 12:30, 14:00 – 17:00 (UTC+1).

Related standards

Standards in the same category (35.220.23)
Standards from the same committee