availability


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availability

[ə‚vāl·ə′bil·ə·dē]
(computer science)
Of data, data channels, and input-output devices in computers, the condition of being ready for use and not immediately committed to other tasks.
(navigation)
The probability that a navigational system will function and provide required levels of accuracy, integrity, and continuity.
(physics)
The difference between the enthalpy per unit mass of substance and the product of entropy per unit mass multiplied by the lowest temperature available to the substance for heat discard; used in determining the ratio of actual work performed during a process by a working substance to that which theoretically should have been performed.
(systems engineering)
The probability that a system is operating satisfactorily at any point in time, excluding times when the system is under repair.

availability

(system)
The degree to which a system suffers degradation or interruption in its service to the customer as a consequence of failures of one or more of its parts.

One of the components of RAS.

availability

The accessibility of a system resource in a timely manner; for example, the measurement of a system's uptime. Availability is one of the six fundamental components of information security (see Parkerian Hexad). See also uptime and high availability.
References in periodicals archive ?
In contrast, the East, burdened by the 800 Westchester Avenue availability as well as significant new offerings at 100 Manhattanville Road in Purchase, 1133 Westchester Avenue in Harrison and 2500 Westchester Avenue in Purchase, among others, saw its available space rise 42% from last year to 2.
Failure to Understand the Users' Requirements: No IT professional gets up in the morning and says "I think I will install a High Availability system today.
IB for MSA provides critical guidelines for assuring end-to-end high availability across the entire infrastructure.
The SteelEye LifeKeeper family of application-centric failover, data replication, and disaster recovery software products are easy to deploy and operate, and enable enterprises of all sizes to ensure continuous availability of business-critical applications, servers and data.
Marathon Technologies Corporation, the fastest growing high availability company, defines what's next after clusters -- Infinite Availability[TM].
Most mid-range to high-end storage systems today are configured with redundant RAID controllers to improve system availability.
Rainfinity's patented award-winning products provide high availability and optimized performance of networked resources, from Internet connections and security to networked attached storage.
The positioning of chilled air-cooling units relative to hardware and perforated floor tiles is critical to enable sufficient airflow and to insure the overall high availability of computing technology.
Intuitive User Interface (UI) provides easy-to-follow menus for quick configuration and simplified management of the High Availability environment.
With absorption totaling just 99,120 square feet for the year, however, the segment's availability rate dropped less than one percentage point compared to September of 1998.
Sonim recently announced commercial availability of the first fully redundant implementation of Open Mobile Alliance (OMA) PoC (PTT over Cellular) 1.
The availability rate in Southern Westchester grew to 11.