The specific date that a property will be ready for occupancy.

a timing consideration used in "Information Driven Design" for specifying how and when data is collected from various sources within an enterprise. Availability answers the question, "Is the data there when I need it?" How data is made available is a function of input. (See Accessibility, and Input).

The primary measure of system performance relating to the expected percentage of the supported system that will be available at a random point in time and not out of service for lack of spares.

The state when data are in the place needed by the user, at the time user needs them, and in the form needed by the user.

The ability of a product to be in a state to perform its designated function under stated conditions at a given time.

Availability is the probability that an item will be able to function ( i.e. not failed or undergoing repair) when called upon to do so. This measure takes into account an item's reliability (how quickly it fails) and its maintainability (how quickly it can be repaired).

The amount of time that a network or device is operational - in other words, the likelihood that it will be available for use when needed.

The amount of water available from a water heater over a specified time period. The value is derived from the addition of the amount of water available from storage (rated delivery), and the amount of water available from the recovery rate (heater output). This value takes into account the temperature rise of the water and the allowable temperature variation.

Availability refers to the amount (or percentage) of time that a given network or component in a network (such as a host or server) is available to carry out its intended task.

Time that a generating unit, transmission line or other system is capable of providing service, even if it isn't actually providing service all the time. It is expressed as a percentage of a specific time period.

A condition in which information or processes are reasonably accessible and used by an authorised party including timely and critical operations.

Assuring information and communications services will be ready for use when expected.

System and network services are available to authorized users when they are needed.

The percentage of time during scheduled hours that the system can be used. It also can refer to the days/week and the hours/day that the system is scheduled for use. See Service Level Agreements

the quality of being at hand when needed

Ability of a system or service to work continuously without interruption. It is usually expressed as a percentage, representing the ratio of available network time to total time. Carrier-class is typically 99.999% -- about five minutes of downtime for failures or repairs per year.

Point in time that funds can be immediately drawn from an account. An example is Next Day Availability.

The probability that a system is operational when called upon to perform its function. The numerical value of availability is expressed as a probability from 0 to 1. Availability calculations take into account both the failures and the repairs of the system.

The quantity of a resource available at a given time (rather than the quantity needed to complete an Task).

A measure of time that a generating unit or transmission line or other facility is capable of providing service, whether or not it is actually in service. Typically this measure is expressed as a percent available for the period under consideration.

The quality or condition of a PV system being available to provide power to a load. Usually measured in hours per year. One minus availability equals downtime.

Ensuring that information systems and the necessary data are available for use when they are needed. Traditionally, computer systems were made available for staff use by the IT department in the early morning, and then closed down again by the IT staff before running their 'End of Day' routines. Availability was thus the poor relation of Confidentiality and Integrity in security terms. However the extension of the working day (for example because of trading with different time zones) and the growth of 24x7 systems, associated with e.g. web sites, Internet (on-line) trading, cash point machines, coupled with the threats of viruses and intrusions means that availability has become a much more important element of Information Security work.

Also known as Avails, the time period available in broadcast media in order to purchase a commercial message.

The percentage of time an analyst is available to take or make calls. This is used to measure the productivity of the Service Desk/Help Desk and the analyst.

The measured customer up-time of a system or application, calculated as a percentage over a specific period.

is the percentage of time that an item of equipment is available for production.

The ability of a system to provide its intended service without interruption for extended periods of time.

The property of an Internet service to be available to end client without interruptions for long periods of time.

That aspect of security that deals with the timely delivery of information and services to the user. An attack on availability would seek to sever network connections, tie up accounts or systems, etc.

The amount of time a power plant is available and ready to generate electricity.

Unit of measure for the actual time a transmission line or generating unit is capable of providing service, if called upon.

One of the three OEE Factors. Takes into account Down Time Loss (events that stop planned production for an appreciable amount of time). Must be measured in an OEE program, usually by recording the duration of Down Time Events.

The portion of a period a generation plant was available for use after deducting planned and unplanned outage hours, compared to the total time period under review.

A measure of the fault tolerance of a computer and its programs. A highly available computer system provides continuous service without interruptions due to software or hardware failures.

The probability that system functional capabilities are ready for use by a user at any time, where all time is considered, including operations, repair, administration, and logistic time. Availability is further defined by system category for both routine and priority operations.

Describes the reliability of power plants. It refers to the number of hours that a power plant is available to produce power divided by the total hours in a set time period, usually a year.

The percentage of time that the services of a navigation system can be used within a particular coverage area. Signal availability is the percentage of time that navigational signals transmitted from external sources are available for use. Availability is a function of both the physical characteristics of the operational environment and the technical capabilities of the transmitter facilities.

The amount of time that a system is available during those time periods when it is expected to be available. Availability is often measured as a percentage of an elapsed year. For example, 99.95% availability equates to 4.38 hours of downtime in a year (0.0005 * 365 * 24=4.38) for a system that is expected to be available all the time. (Provided by SNIA).

s The portion of time that a system can be used for productive work, expressed as a percentage.

timely, reliable access to data and information services for authorized users.

A function of both the physical characteristics of the operational environment and the limitations of the transmitter facilities, it is the percentage of time where the services of a navigation system can be used within a given coverage area. Signal availability is the percentage of time that navigational signals from external sources can be used.

The probability that an item will be operationally ready to perform its function when called upon at any point in time.

1- The amount of time a system if functioning and is accessible to its clients. 2- Or a measurement of computer system reliability; the amount of time a system is accessible to the clients is divided by the amount of time that it is not accessible to the clients.

A measure of how much time a network or a connection is running. Generally the equation is: Time Running / Time Measured (time running divided by time...

The property that a communications system or service is useable on a timely basis in the required manner.

Ability of a component or service to perform its required function at a stated instant or over a stated period of time. It is usually expressed as the availability ratio, i.e., the proportion of time that the service is actually available for use by the customers within the agreed service hours.

as used by IT professionals, the amount of uptime. A product, system or service with three nines or better uptime is referred to as "high availability."

3/4– Time on a station, cable channel or network which is offered for sale. Also know as an Avail.

Link availability is the fraction of time a link is useable in specific weather encountered in various climates, assuming no outages due to equipment failure or other system problem. Availability is typically quoted in nines. For example, 99.9%, or three-nines (3-9's) availability, means, on average, the link is expected to be not available 0.1% of the time, or an average of 43 minutes per month. Four-nines (4-9's) availability translates into only four minutes per month of down-time and five-nines averages just 30 seconds of downtime per month.

The percentage or amount of scheduled time that a computing system provides application service.

Reliability of a communications link, typically expressed by the percentage of time e.g. 99.99% equals to a downtime of 9 hours per year.

n. In processing, the accessibility of a computer system or resource, such as a printer, in terms of usage or of the percentage of the total amount of time the device is needed.

The degree to which a system (and in Tivoli Workload Scheduler for z/OS, an application) or resource is ready when needed to process data.

Content (whether a targeted message or other information) that is delivered or placed where the audience can access it. Placement varies according to audience, message complexity, and purpose— from interpersonal and social networks to billboards, mass transit signs, prime-time TV, and radio and from public kiosks (print or electronic) to the Internet.

The available media space for sale at any given point in time.

Refers to the amount of time within a 24 hour period a system is active or available for servicing requests. For example, if a hosting company says it is available 99.9% of the time, they are claiming that your web site will up all the time except for about 8 seconds each day. Over the course of a year, in this example, the hosting company is claiming that your site will only be unavailable (couldn't surf to it) for 48 hours.

In cable television systems, availability is the long-term ratio of the actual RF channel operation time to scheduled RF channel operation time (expressed as a percent value) and is based on a bit error rate (BER) assumption.

Simply, the ratio of the time for which a power source is functioning to the time for which it should have been functioning.

The number of hours in the reporting period less the total downtime for the reporting period divided by the number of hours in the reporting period (expressed in percent).

A term used to indicate the probability of a system or capability of a system to remain operable and service requests. Availability takes into account the operating time of the system or system capability and the time required for repairs or maintenance. It is typically expressed in terms the percentage of time the system remains in service (99.999% or 99.9999%, implying a downtime of 5 minutes or 30 seconds per year).

The amount of time that the quality of a telecommunication service or communications link equals or exceeds a specified minimum value. For satellite communication links the availability is usually expressed as a percentage of the average year. See also Outage.

The information systems on which the organization is heavily dependent is available for the organization at all times when required.

The measure of the ability of a system or resource to provide the desired service when required. Measured in terms of the percentage of time the device is accessible out of the total time it is needed. Businesses that require uninterrupted computing services have an availability goal of 100%, or 24x365. The sum of availability and downtime equals 100%. See also downtime and switchover

A product or service's ability to perform its intended function at a given time and under appropriate conditions. It can be expressed by the ratio operative time/total time where operative time is the time that it is functioning or ready to function.

A measure of the degree to which an item is in an operable and committable state at the start of a mission when the mission is called for at an unknown (random) time. In OT&E, operational availability (Ao) is the usual measure. (See Operational Availability.)

Also called "Avails." A broadcast time period available for purchase by an advertiser.

Availability of a system allows it to redundancy in order to eliminate any single points of failure of the system. For example, if only one web server responds to the HTTP requests, the web server is a single point of failure. If two web server are load balanced by a load balancer, the load balancer is a single point of failure. High availability systems have good fault-tolerance mechanisms in place by employing hardware and software based redundancies. However, achieving 100% availability is often very costly as compared to 99.5%. In the hosting industry this is also known as uptime guarantee.

The available media space for sale at any given time. Common to all media.

A KPI measurement of the percentage of stock available for immediate demand.

The percentage of time that a worker or machine is capable of working. The formula is Availability = (S – B) × 100% where S is the scheduled time and B is the downtime.

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. NephroCare particular efforts will lead to an availability of its central hosted application which superior to applications which are installed on a local PC.

Availability is the property of being accessible and usable upon demand by an authorized entity.

The limit of capacity for Maximum Demand. Consumers pay a fee per unit for the capacity they have. (i.e. if a site has an Availability of 150 kVa then maximum demand should not exceed that figure at any time.)

Availability is the need to ensure that the business purpose of the system can be met and that it is accessible to those who need to use it.

The level to which data objects should be available to business end users. That is, Availability addresses the question "How easy is it to access these data?".

(disponibilité) - the condition of being usable on demand to support business functions

The accessibility of a computer system or network resource.

The property of an asset being accessible and usable upon demand by an authorized system users and processes. This property is potentially affected by the failure of components, denial of service attacks, or unauthorized destruction of assets.

Usability of information or a resource for a purpose when it is needed.

The degree to which a system (or system component) is operational and accessible when required for use.

( disponibilité) - the condition of being usable on demand to support operations, programs and services.

means that data is accessible and services are operational.

availability - The property of a system or a system resource that ensures it is accessible and usable upon demand by an authorized system user. Availability is one of the core characteristics of a secure system.

The property of being accessible and usable upon demand by an authorized entity. Security constraints must make MIS services available to authorized users and unavailable to unauthorized users.

Generally, the reference is to the provision in Revised Order No. 4 requiring covered employers to conduct an analysis to determine whether or not minorities or women are "underutilized" in various job categories. "Under utilization" in turn is defined as having fewer minorities or women in a job category than would be expected by their "availability." Al though that term is sometimes misconstrued to mean representation in the population at large, it should be interpreted to mean availability of minorities and women in the relevant labor market who are qualified under valid, job-related criteria.

refers to the percentage of minorities or women in a specific geographic area who have the requisite skills or who are capable of acquiring the requisite skills necessary to perform a particular job.

The actual number of seats that are free to be sold at a particular rate.

Term used to define fares or seats that are still available on a flight. Availability changes rapidly throughout the day as seats are purchased or canceled by travelers.

Usually ships in 24 hours Binding: Hardcover

Usually ships in 24 hours Binding: Plastic Comb

Usually dispatched within 24 hours Binding: Paperback

The number of hours per day that a particular location has sufficient satellites (above the specified elevation angle and less than the specified PDOP value) to make a GPS position fix.

Capable of being used. Usually refers to resources and/or funding [D02396] RMW