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Contents. History has been used for over 50 years, but typically did not hold file metadata in a form easy to access or modify independent of the file content data. Often external databases were used to maintain file metadata (file names, timestamps, directory hierarchy) to hold this data but these external databases were generally not designed for and tapes might or might not contain an index of their content. In systems, there is the interoperable standard, but this is not well-suited to allow modification of file metadata independent of modifying file content data - and does not maintain a central index of files nor provide a filesystem interface or characteristics. LTFS technology was first implemented by IBM as a prototype running on Linux and Mac OS X during 2008/2009. This prototype was demonstrated at NAB 2009.
Requirements to use BRU PE with the BRU PE LTFS Manager: The following LTFS requirements are based on the developers of the LTFS technology. TOLIS Group does not develop or maintain any LTFS code. If you plan to use BRU PE for any LTFS operations, please be aware of our LTFS Caveats List. Intel-based system Mac Pro or Xserve running macOS 10.6. A video demonstrating the workflow in BRU Producer's Edition for. BRU PE FCP X Workflow.
Based on feedback from this initial demonstration and experience within IBM the filesystem was overhauled in preparation for release as a product. The LTFS development team worked with the vendors of LTO tape products (HP and Quantum) to build support and understanding of the LTFS format and filesystem implementation leading up to the public release. The LTFS Format Specification and filesystem implementation were released on April 12, 2010 with the support of IBM, HP, Quantum, and the LTO Consortium. LTFS v2.0.0 was released in March 2011, improving the text to clarify and remove ambiguity. It also added support for; persistent file identifiers; virtual extended attributes for filesystem metadata and control - and defined minimum and recommended blocksize values for LTFS volumes, for compatibility across various HBA hardware implementations. Format specification Version 2.0.0 defines rules for how the version number may change in future, and how compatibility is maintained across varying implementations.
All implementations must:. correctly read media that was compliant with any prior version. write media that is compliant with the version they claim compliance with LTFS Format Specification History Version Published Conforming Software 1.0 April 2010 v1.0.0, v1.0.1 v1.0.0, v1.1.0 2.0.0 March 2011 v1.2.0, v1.0.0 2.1.0 October 2012 2.2.0 July 2013? 2.3.0 March 2014? 2.4.0 December 2017? SNIA Technical Work Group In August 2012, announced that it was forming a TWG (Technical Work Group) to continue technical development of the specification. LTFS Format Specification v 2.1 is the baseline for the technical work and standards accreditation process; SNIA LTFS TWG members include,.
Nature While LTFS can make a tape appear to behave like a disk, it does not change the fundamentally sequential nature of tape. Files are always appended to the end of the tape. If a file is modified and overwritten or removed from the volume, the associated tape blocks used are not freed up, they are simply marked as unavailable and the used volume capacity is not recovered. Data is only deleted and capacity recovered if the whole tape is reformatted. In spite of these disadvantages, there are several uses cases where LTFS formatted tape is superior to disk and other data storage technologies.
While LTO seek times can range from 10 to 100 seconds, the streaming data transfer rate can match or exceed disk data transfer rates. Additionally, LTO cartridges are easily transportable and hold far more data than any other removable data storage format. The ability to copy a large file or a large selection of files (up to 1.5TB for LTO-5 or 2.5TB for LTO6) to an LTFS formatted tape, allows easy exchange of data to a collaborator, or the saving of an archival copy. Since LTFS is an open standard, LTFS formatted tapes are usable by a wide variety of computing systems.
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Implementations IBM Linear Tape File System - Single Drive Edition IBM Linear Tape File System - Single Drive Edition Initial release April 2010. 2.2.2.0 (9802) / 28 October 2016; 2 years ago ( 2016-10-28) Written in, Available in Website The Linear Tape File System - Single Drive Edition, (initially released as 'IBM Long Term File System'), allows tapes to be formatted as an LTFS volume, and for these volumes to be mounted - and users and applications access files and directories stored on the tape directly, including of files. 2.0.0 / 28 March 2011; 7 years ago ( 2011-03-28) Written in, Available in Website The Linear Tape File System - Library Edition (LTFS-LE) product allows LTFS volumes to be used in a. Each LTFS-formatted tape cartridge in the library appears as a separate folder under the filesystem mount point and the user or application can navigate into each of these folders to access the files stored on each tape. The LTFS-LE software automatically controls the tape library robotics to load and unload the necessary LTFS volumes. Operating systems supported by IBM LTFS-LE. (RHEL) 5.4, 5.5 with LTFS-LE 2.0.0 for Linux (latest release: June, 2011).
(SLES) 11 SP 1 with LTFS-LE 2.0.0 for Linux (latest release: June, 2011) Oracle's StorageTek Linear Tape File System, Open Edition Oracle's StorageTek Linear Tape File System, Open Edition Initial release 2011. 1.2.6 Written in, Available in LGPL-2.1, BSD Website and 's free open source StorageTek Linear Tape File System (LTFS), Open Edition software is claimed to be the first to store 8.5TB (native capacity) on a single cartridge.
It supports Oracle’s midrange StorageTek LTO 5 and LTO 6 tape drives from HP and IBM as well as Oracle’s StorageTek T10000C and T10000D tape drives. Oracle's StorageTek Linear Tape File System, Library Edition Oracle’s StorageTek LTFS-LE software offering supports the StorageTek SL8500 Modular Library System, the StorageTek SL3000 Modular Library System, and the StorageTek SL150 Modular Tape. HP Linear Tape File System HP Linear Tape File System. 1.1.0 / 29 November 2010; 8 years ago ( 2010-11-29) Written in, Website The Linear Tape File System (HP LTFS) is HP's implementation.
It is a free open source software application. Operating systems supported by HP LTFS. Quantum Linear Tape File System Quantum LTFS, Website Quantum Corporation provides an LTFS solution with Windows, Linux and Mac OS X support.
The Scalar LTFS Appliance is a file system that presents a Quantum tape library as an NAS share. This appliance makes files viewable as if they resided on a local disk and allows users to drag and drop files directly to and from a tape cartridge. 2012-09-04 at. Retrieved 4 October 2012. ^. ^.
Retrieved 2017-05-21. Crossroads - Press Release, Austin, TX, April 11, 2011:. TOLIS Group - Press Release, Las Vegas, NV — April 11, 2011:. SGL - Press Release, Fareham, UK - February 9, 2011:., JAN 27, 2014, Ben Kepes, Forbes. Thought Equity Motion - Press Release:. External links. at LTO.
digital video recorder device using LTFS formatted tape cartridges. Offload and backup system.