open system


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open system

[′ō·pən ′sis·təm]
(computer science)
A computer system whose key software interfaces are specified, documented, and made publicly available.
(hydrology)
A condition of freezing of the ground in which additional groundwater is available either through free percolation or through capillary movement.
(thermodynamics)
A system across whose boundaries both matter and energy may pass.

open system

A fluid piping system in which the circulating fluid is connected to an open-vented elevated tank, to a cooling tower, or the like; the tank serves as a reservoir to accommodate the expansion and contraction of the fluid, and as a convenient location for inspecting the condition of the fluid.

open system

A system that allows third parties to make products that plug into or interoperate with it. For example, the PC is an open system. Although the fundamental standards are controlled by Microsoft, Intel and AMD, thousands of hardware devices and software applications are created and sold by other vendors for the PC.

For years, the term "open systems" (plural) referred to the Unix world because Unix ran in more types of computer hardware than any other operating system (combined with Linux, it still does). Contrast with closed system.

Open Systems Vs. Open Source
Open systems refers to open platforms, whereas open source refers to the software's source code and rights regarding its redistribution. Open systems may employ open source software or proprietary software. See open source.

Open Systems Vs. Open Standards
Open systems may or may not employ open standards, the Windows PC being the prime example of an open system that is "not" an open standard (governed by a standards organization).

On the other hand, open standards do imply open systems, and the two terms are often used synonymously. However, there is absolutely no reason why an open standard could not be employed within a closed system that cannot be extended or enhanced by a third party. See open standards.
References in periodicals archive ?
The essential elements and the supportive technical and business practices needed to develop affordable and adaptable open systems are depicted graphically above.
The i10K's combination of SAN LPARs and Open VSANs allows for mainframe deployments to more securely co-exist with open systems fabrics in support of cost cutting consolidation efforts.
System, software, and hardware vendors have been touting the ability to integrate mainframe and open systems technologies for many years, but the fact is there is a long way to go.
Osmosis Open Systems Monitoring Service is the most unique solution to hit the open systems market in years.
Controline's main areas of expertise and specialization are in open systems networks and IT integration.
With this slew rate, the Ultra's gradient speed facilitates higher resolution imaging with thinner slices, smaller fields-of-view and faster scanning -- nearly five times faster than current open systems and 250 percent greater that its high-field counterparts.
ADIC(R) is the world's largest supplier of automated tape systems using the drive technologies most often employed for backing up open system, client-server networks.
ADIC data management software is used in more than 1000 organizations worldwide to manage some of the industry's largest and most challenging open systems data storage environments.
By transitioning to open systems disk-based storage, operational efficiencies are significantly improved as companies will start reducing tape library costs, in terms of floor space, racks, equipment, cartridges, and personnel.
A Modular Open Systems Approach (MOSA) is a means to assess and implement, when feasible, widely supported commercial interface standards in developing systems using modular design concepts.
Why is storage management so much more of a problem on Open Systems than mainframes?
A similar percentage said they expect to operate mission-critical applications on open systems platforms.

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