VTL 9140-001
VTL may refer to: * Virtual tape library, for computer data storage * Vermont Transit Lines, US * Vertical turret lathe * Apache Velocity Apache Velocity first released in April 2001, is a Java-based template engine that provides a template language to reference objects defined in Java code. It aims to ensure clean separation between the presentation tier and business tiers in a W ...

Virtual Tape Library
A virtual tape library (VTL) is a data storage virtualization technology used typically for backup and recovery purposes. A VTL presents a storage component (usually hard disk storage) as tape libraries or tape drives for use with existing backup software. Virtualizing the disk storage as tape allows integration of VTLs with existing backup software and existing backup and recovery processes and policies. The benefits of such virtualization include storage consolidation and faster data restore processes. For most mainframe data centers, the storage capacity varies, however protecting its business and mission critical data is always vital. Most current VTL solutions use SAS or SATA disk arrays as the primary storage component due to their relatively low cost. The use of array enclosures increases the scalability of the solution by allowing the addition of more disk drives and enclosures to increase the storage capacity. The shift to VTL also eliminates streaming problems that of ...
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Vermont Transit Lines
Vermont Transit Lines (VTL) was a bus carrier company serving New England. Founded in 1929 by William Appleyard, it originally linked the communities of Barre and Burlington, Vermont, with stops along the route. VTL grew to add destinations throughout the state, and added routes to Montreal, Quebec; to Boston and Springfield, Massachusetts; and to Maine and New Hampshire. Acquisition by Greyhound Lines In 1975 VTL was purchased by Greyhound Lines, becoming a subsidiary line. Vermont Transit Lines remained based in Burlington, Vermont, with major terminals in White River Junction, Montreal and Boston. Service was primarily provided along the Interstate 89 corridor and then on to Boston. Discontinuance of the Vermont Transit brand On April 1, 2008, Greyhound Lines ceased use of the Vermont Transit Lines brand fully consolidating VTL routes into its operations timetable.
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Turret Lathe
The turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable. It evolved from earlier lathes with the addition of the ''turret'', which is an indexable toolholder that allows multiple cutting operations to be performed, each with a different cutting tool, in easy, rapid succession, with no need for the operator to perform set-up tasks in between (such as installing or uninstalling tools) or to control the toolpath. The latter is due to the toolpath's being controlled by the machine, either in jig-like fashion, via the mechanical limits placed on it by the turret's slide and stops, or via digitally-directed servomechanisms for computer numerical control lathes. The name derives from the way early turrets took the general form of a flattened cylindrical block mounted to the lathe's cross-slide, capable of rotating about the vertical axis and with toolholders pr ...
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