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    Linear Tape File System Now an International Standard

    By David Pease, Co-Chair SNIA Linear Tape File System Technical Working Group

    In 2011 the Linear Tape File System (LTFS) earned IBM an Engineering Emmy Award after being recognized by FOX Networks for “improving the ability of media companies to capture, manage and exploit content in digital form, fundamentally changing the way that audio and video content is managed and stored.”  Now, the International Standardization Organization (ISO) has named LTFS an International Standard (ISO/IEC 20919:2016).

    LTFS’s road to standardization was a long one.  It started with IBM and the LTO (Linear Tape Open) Consortium jointly publishing the LTFS Format Specification as an open format in April, 2010, the day that LTFS was announced at the NAB (National Association of Broadcasters) show in Las Vegas.  In 2012, at the invitation of the Storage Networking Industry Association (SNIA), we formed the SNIA LTFS Technical Work Group, with a specific goal of moving towards international standardization.  The LTFS TWG and SNIA proceeded to publish several revisions of the LTFS Format Specification, inviting all interested parties to join the work group and contribute, or to comment on the specification before formal publication.  In 2014 SNIA helped the LTFS TWG format the then-current version of the specification (V2.2) to ISO standards and worked with the ISO organization to publish the specification as a draft standard and solicit comments.  After review and comments, the LTFS Format Specification was approved by ISO as an international standard in April of 2016 (just 6 years after it was first announced).

    We are thrilled by the recognition of LTFS as an ISO standard; it is one more step towards guaranteeing that the LTFS format is a truly open standard that will continue to be available and usable for the foreseeable future.  In my opinion, two of the major inhibitors to the widespread use of tape technology for data storage have been the lack of a standard format for data storage and interchange on tape, and its perceived difficulty of use. LTFS addresses both of these problems by providing a general-purpose, open format that can easily be used like any other storage medium.

    As the world’s data continues to grow at an increasing pace, and the need for affordable, large-scale storage becomes more important, the standardization of LTFS will make the use of tape for long-term, affordable storage easier and more attractive.

    Use Case: Making Digital Media Storage Open and Future-Proof

    Just as in personal photography, the last couple of decades have seen a major shift from analog and film technologies to digital ones in the Media and Entertainment industry, where modern cameras record directly to digital media. This has led to the need for new technologies to replace traditional film as a long-term storage medium for television and movies.

    Film has some specific advantages for the Media & Entertainment industry that a new technology needs to replicate, including long shelf life, inexpensive, and zero-power storage, and a format that is “future-proof.” Tape storage is a perfect match to several of these criteria, including long (30+ years) shelf life, and zero-power, inexpensive storage. However, a stumbling block for the wide-spread acceptance of tape for digital storage in the media and entertainment business had been the lack of an open, easy-to-use, future-proof standard for the format of the data on tape. You can imagine an entertainment company using proprietary storage software, for example, only to run into problems like the provider going out of business or increasing its software costs to an unacceptable level.

    We created LTFS to be an open and future-proof format from the beginning: open, because when we published the format, we made it publicly available at no charge, and future-proof because the format is self-documenting and can be easily accessed without the need for proprietary software.

    Being an international standard should make anyone who is considering the use of LTFS even more comfortable with the fact that it is an open standard that is not owned or controlled by any single company, and is a format that will continue to be supported in the future.  As such, becoming an international standard has the potential to increase the use, and therefore the value, of LTFS across industries.

    For more information about the work of the SNIA LTFS TWG, please visit www.snia.org/ltfs.

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