What is the meaning of availability of information?

From BCMpedia. A Wiki Glossary for Business Continuity Management (BCM) and Disaster Recovery (DR).

1. Availability is the amount of time that a system will be available. It is calculated as a percentage of an elapse year.

What is the meaning of availability of information?

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Related Term: High Availability; Confidentiality; Integrity; See Notes (3) for cyber security context.

Notes (1): 99.99 percent availability equates to 0.876 hours or 52.56 minutes of downtime in a year (0.0001 * 365 * 24 = 0.876 hour) for a service or machine that is supposed to be available all the time.

Notes (2): Another definition is to ensure that the systems and data are accessible to authorized users when they need it. Both business continuity and disaster recovery address the availability leg of the information security principles, which is Confidentiality, Integrity and Availability.

Notes (3): Availability (of data) in the context of cyber security, means that data when required can be accessed anywhere at any time.

What is the meaning of availability of information?

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What is the meaning of availability of information?

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(Source: Business Continuity Management Institute - BCM Institute)

2. An umbrella term that includes reliability (including resilience), maintainability, serviceability and security. A common definition of availability is 'the ability of a component or Business Continuity (under combined aspects of its reliability, maintainability and security) to perform its required function at a stated instant or over a stated period of time'. Service availability is sometimes expressed as an availability percentage, i.e. the proportion of time that the service is actually available for use by the customers within the agreed service time.

What is the meaning of availability of information?

(Source: ENISA - the European Network and Information Security Agency. BCM & Resilience Glossary)

3. The 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.

(Source: OGC, Information Technology Infrastructure Library (ITIL) v3)

What is a meaning of availability?

: the quality or state of being available. trying to improve the availability of affordable housing. : an available person or thing.

What is availability in information system?

As defined in FISMA, the term 'availability' means ensuring timely and reliable access to and use of information.

Why is the availability of information important?

Maintaining data availability is essential for the performance and business continuity of an organization. If you were to lose access to mission-critical data, your IT operations could grind to a halt, resulting in financial costs and, more importantly, damage to the reputation of your organization.

What does availability mean in data?

Data availability is a term used by computer storage manufacturers and storage service providers to describe how data should be available at a required level of performance in situations ranging from normal through disastrous.