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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.
Oracle's free open source StorageTek Linear Tape File System (LTFS), Open Edition software [10] 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. [11] [12]
Tape was an important medium for primary data storage in early computers, typically using large open reels of 7-track, later 9-track tape. Modern magnetic tape is most commonly packaged in cartridges and cassettes, such as the widely supported Linear Tape-Open (LTO) [1] and IBM 3592 series.
As a result, tape drives have very large average access times. However, tape drives can stream data very quickly off a tape when the required position has been reached. For example, as of 2017 Linear Tape-Open (LTO) supports continuous data transfer rates of up to 360 MB/s, a rate comparable to hard disk drives.
In August 2023 IBM announced the TS1170 tape drive with 50TB cartridges, more than 2.5 times larger than LTO-9 cartridges. [1] Like the 3590 and 3480 before it, this tape format has half-inch tape spooled onto 4-by-5-by-1-inch data cartridges containing a single reel. A take-up reel is embedded inside the tape drive.
Stand-alone tape management systems are predominant on mainframe platforms where tape is used as both a backup and base load storage medium.. Mainframe systems such as IBM's z/OS do provide some basic support for tape inventory control via the OS Catalog but as cataloging files is optional it is usually required that an additional software package does the following:
Digital Linear Tape (DLT; previously called CompacTape) is a magnetic-tape data storage technology developed by Digital Equipment Corporation (DEC) from 1984 onwards. In 1994, the technology was purchased by Quantum Corporation , who manufactured drives and licensed the technology and trademark.
The 3480 tape format is a magnetic tape data storage format developed by IBM. The tape is one-half inch (13 mm) wide and is packaged in a 4 in × 5 in × 1 in (102 mm × 127 mm × 25 mm) cartridge. The cartridge contains a single reel; the takeup reel is inside the tape drive.