different between redundancy vs backup

English

Etymology

redundant +? -cy

Pronunciation

• (Received Pronunciation) IPA^(key): /???d?nd(?)nsi/
• (General American) IPA^(key): /???d?nd?n(t)si/, /??-/
• Hyphenation: re?dun?dan?cy

Noun

redundancy (countable and uncountable, plural redundancies)

1. The state of being redundant
2. A superfluity; something redundant or excessive; a needless repetition in language
3. Duplication of components or circuits to provide survival of the total system in case of failure of single components.
   • 2006, Lauren Bean, Richard E. Friedman, Chapter 5: School Safety in the Twenty First Century: Adapting to New Security Challenges Post-9/11, James J. F. Forest (editor), Homeland Security: Protecting America?s Targets, Volume 2: Public Spaces and Social Institutions, page 108,

     Staff redundancy is needed in the event that a supervisor and key unit supervisors are not present or unable to act in an emergency.

4. Duplication of parts of a message to guard against transmission errors.
5. (chiefly Britain, Australia, New Zealand) The state of being unemployed because one's job is no longer necessary; the dismissal of such an employee; a layoff.
   • 1981, New Zealand House of Representatives. Parliamentary Debates, Volume 442, page 4212,

     Has he received any representation from Air New Zealand management about redundancy proposals for Air New Zealand staff; and, if so, do these proposals include redundancy agreements?

   • 1983, UK House of Commons, Papers by Command, Volume 40, page lvi,

     The potential savings did not take into account once-and-for-all staff redundancy costs of £16.5 million and unspecified costs involved in increasing stock levels […] .

   • 2003, K. Brendow, Restructuring Estonia?s Oil Shale Industry: What Lessons from the Restructuring the Coal Industries in Central and Eastern Europe?, Oil Shale, page 307,

     In Estonia, in addition, the ethnical aspects of staff redundancy programmes have to be taken into account.
6. (law) surplusage inserted in a pleading which may be rejected by the court without impairing the validity of what remains.

Synonyms

• (state of being redundant): redundance (rare), pro-chrono continuum (rare), superfluity, superfluousness
• (thing that is redundant): dead wood, superfluity
• (duplication in case of transmission error): backup
• (state of being unemployed): retirement
• (instance or act of dismissal): sacking

Antonyms

• (state of being redundant): non-redundancy
• (state of being unemployed): employment
• (instance or act of dismissal): hiring

Hyponyms

• space redundancy
• time redundancy

Derived terms

• Common Access Redundancy Protocol
• cyclic redundancy check/CRC
• Department of Redundancy Department
• redundancy check

Translations

References

• redundancy on Wikipedia.Wikipedia

English

Alternative forms

• back-up

Etymology

back +? up

Pronunciation

• IPA^(key): /?bæk??p/

Noun

backup (plural backups)

1. A reserve or substitute.

   If the goalkeeper is injured, we have a backup.

2. (computing) A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged.

   After the power failure, we had to restore the database from backup.

3. An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow.

   The accident caused a mile-long backup on the highway.

   The blockage caused a backup in the plumbing.

4. (law enforcement) reinforcements

   He's got a gun! You'd better send for backup.

Synonyms

• (reserve): reserve, stand-in, spare, substitute
• (computing: copy of a file or record):
• (accumulation of material caused by an obstruction of flow): tailback, line (of cars)

Descendants

Translations

Adjective

backup (not comparable)

1. Standby, reserve or extra.

   I am only a backup player.

2. (computing) That is intended as a backup.

   Make a backup copy of that file.

3. Supporting, reinforcing; (music) of or related to accompaniment

Usage notes

Back-up is an alternative spelling of backup. Both spellings are used as either a noun or an adjective. The verb back up is always spelled as two words and never with a hyphen.

Synonyms

• (reserve): extra, reserve, spare, standby
• (supporting): backing

Translations

Verb

backup (third-person singular simple present backups, present participle backupping, simple past and past participle backupped)

1. Misspelling of back up.

Anagrams

• upback

Italian

Etymology

Borrowed from English backup.

Pronunciation

• IPA^(key): /be?kap/, /?b?.kap/

Noun

backup m (invariable)

1. (computing) backup

Portuguese

Alternative forms

• becape

Etymology

Borrowed from English backup.

Noun

backup m (plural backups)

1. (computing) backup (copy of file or record)