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(Linear Tape Open) A family of open magnetic tape standards developed by HP, IBM and Quantum (formerly the Certance subsidiary of Seagate) that are licensed to third-party vendors. LTO cartridges contain a memory that stores historical usage data. Although LTO was introduced with a native capacity of only 100GB, multi-terabyte tapes followed. Starting with LTO-3, write once-read many (WORM) support was added, and LTO-4 built in hardware encryption (see table below). See WORM.

LTO Is Ultrium
In 1998, two formats were announced: a single-hub Ultrium, like DLT cartridges, and a dual-hub Accelis, similar to Magstar MP. Sharing read/write head, track layout and other features, the single-hub Ultrium was accepted, while Accelis never took off. For information, visit See DLT and Magstar MP.

An LTO (Ultrium) Cartridge
The single-hub Ultrium is the only LTO format, and LTO and Ultrium are synonymous.

LTO UltriumGeneration    Native         Hardware  (year)     Capacity  WORM  Encryption

  LTO-1 (2000)  100GB
  LTO-2 (2003)  200GB
  LTO-3 (2005)  400GB      X
  LTO-4 (2007)  800GB      X       X

  LTO-5 (2010)  1.5TB      X       X
  LTO-6 (2012)  2.5TB      X       X
  LTO-7 (2016)  6.0TB      X       X
References in periodicals archive ?
2) Joseph Marquete, Biggest Cyber Security Threat to Law Firms Is Not What You Think, Accelis Technology Group (Mar.
The following products recently caught the attention of the FTC: Accelis, nanoSLIM, Cold MD, Germ MD and Allergy MD.
launched Accelis, believed to be the first diet product using a patented soft-gel rapid-release delivery system featuring corosolic acid.
s Accelis, for example, is said to be the first diet product using a patented soft-gel, rapid-release delivery system based on corosolic acid.
today announced a multi-phase strategic alliance to integrate SDRC's I-DEAS mechanical design automation and SDRC's TeamCenter collaborative product management solutions, including specific functionality from Metaphase and Accelis, with Asera's eBusiness Operating System.
The technology trio is also working on Accelis, a single reel format.
Just launched in July 2000, Accelis has already been purchased by Boeing and several other large customers.
The pilot program made use of the Accelis system from Structural Dynamics Research Corp.
US aircraft manufacturer Boeing Co's Commercial Airplane Group has successfully completed a pilot project suing Accelis, an Internet software product developed by Structural Dynamics Research Corp according to Dow Jones News.
media with a transfer rate ranging between 80 and 160 Mbps) or on the Accelis (scheduled to enter with a 25-GB capacity on 8mm tape with the same transfer rate) can be found at their Web-page: www.
LTO - the open tape format proposed last year for mid-range systems by IBM, Hewlett-Packard Co and Seagate Technology Inc - is an industry brand, as are the two LTO formats, Ultrium for high capacities of 100Gb, and the dual-reel Accelis for fast access.
In support of this strategic alliance, SDRC and Asera will initially build a set of adapters between the Asera Platform and SDRC's Accelis products -- allowing SDRC customers the ability to manage the access, distribution and presentation of product information in a collaborative web environment using Asera's robust security, entitlement and personalization capabilities.