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The Linear Tape File System (LTFS) is a file system that allows files stored on magnetic tape to be accessed in a similar fashion to those on disk or removable flash drives. It requires both a specific format of data on the tape media and software to provide a file system interface to the data.
Linear Tape-Open (LTO), also known as the LTO Ultrium format, [1] is a magnetic tape data storage technology used for backup, data archiving, and data transfer. It was originally developed in the late 1990s as an open standards alternative to the proprietary magnetic tape formats available at the time.
File archiver and backup tools have been created to pack multiple files along with the related metadata into a single tape file. Serpentine tape drives (e.g., QIC) offer improved access time by switching to the appropriate track; tape partitions are used for directory information. [24] The Linear Tape File System is a method of storing file ...
Linear Tape-Open LTO-4: 800 GB: 2008 IBM TS1130: 1 TB: Encryption capability integrated into the drive 2008 StorageTek T10000B: 1 TB: 2010 Linear Tape-Open LTO-5: 1.5 TB: Linear Tape File System (LTFS), which allows accessing files on tape in the file system directly (similar to disk filesystems) without an additional tape library database 2011 ...
The IBM implementation of this file system has been released as the open-source IBM Linear Tape File System — Single Drive Edition (LTFS-SDE) product. The Linear Tape File System uses a separate partition on the tape to record the index meta-data, thereby avoiding the problems associated with scattering directory entries across the entire tape.
The system also included a simple file format consisting of a 768-byte lead-in followed by a header with the number of blocks in the file. The data was encoded in blocks; these started with 8-byte lead-in of spaces and a single mark, then 64 bytes of data, and finally a 1-byte checksum, for a total length of 73 bytes.
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LTFS (Linear Tape File System for LTO and Enterprise tape) MVFS – MultiVersion File System, proprietary, used by IBM DevOps Code ClearCase. Nexfs Combines Block, File, Object and Cloud storage into a single pool of auto-tiering POSIX compatible storage. OverlayFS – A union mount filesystem implementation for Linux.