International Standard
ISO/IEC 22051:2002
Information technology — Data interchange on 12,7 mm, 448-track magnetic tape cartridges — SDLT1 format
Reference number
ISO/IEC 22051:2002
Edition 1
International Standard
Read sample
ISO/IEC 22051:2002
Published (Edition 1, 2002)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO/IEC 22051:2002

ISO/IEC 22051:2002
CHF 194
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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.

General information

  •  : Published
     : 2002-10
    : International Standard confirmed [90.93]
  •  : 1
     : 59
  • ISO/IEC JTC 1/SC 23
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