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In engineering, redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing.
In many safety-critical systems, such as fly-by-wire and hydraulic systems in aircraft, some parts of the control system may be triplicated, which is formally termed triple modular redundancy (TMR). An error in one component may then be out-voted by the other two. In a triply redundant system, the system has three sub components, all three of which must fail before the system fails. Since each one rarely fails, and the sub components are expected to fail independently, the probability of all three failing is calculated to be extraordinarily small; often outweighed by other risk factors, such as human error. Redundancy may also be known by the terms "majority voting systems" or "voting logic".

Redundancy sometimes produces less, instead of greater reliability – it creates a more complex system which is prone to various issues, it may lead to human neglect of duty, and may lead to higher production demands which by overstressing the system may make it less safe.

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  1. elial

    NSW Is notice period considered for period of redundancy pay?

    Is the notice period considered for the continuous employment period required for redundancy pay? E.g. an employee receives a notice of termination a day before they complete one year of employment. The notice period is one week. Would the employee be entitled to redundancy pay? What about if...
  2. D

    NSW Redundancy Pay

    Hi, Unfortunately I'm being made redundant after 20 years of working for a large corporation; the termination pay-out includes max of 12 weeks plus 5 weeks of pay in lieu of notice so all together 17 weeks - industry standards ; according to the HR manual dated from the year I've started (2001)...
  3. S

    QLD Do I need to accept contract extension to be eligle for redundancy

    My full time permanent position was recently being made redundant. I accepted a transfer of employment to a temporary position with an indicated end date. The letter mentions that I am eligible to a redundancy payment should no further extensions or the date be available or redeployment. I am...
  4. S

    WA Rehiring after Redundancy

    Following a company restructure, a management role I was performing will cease to exist and I have been made redundant. I finished up last week and am waiting for my severance pay to be credited. Although the management role will no longer exist, there are vacancies in the team I was managing...
  5. M

    QLD Bullying by Manager

    Hi, can you give me guidance on how to handle a bullying complaint I made to my employer and what options I have to request for an outcome? I've been working in a senior position for this company for 5 years and feel my manager started bullying me approx. 12 months ago. I did not recognise it...
  6. G

    NSW Non genuine redundancy/unfair dismissal?

    Hi, just seeking peoples thoughts on this situation. I have been employed by company X for over 15 years. Company X is whom i am paid by. For the last few years I have also been working for an associated entity which takes up majority of my working hours, lets call this company Y. I was made...
  7. C

    QLD Illegal Redundancy?

    On the 28th June 2019 I was made redundant, the reason being that my job would no longer exist. There are also many other serious worker infringements up for discussion eg bullying (a dog poo was left on my desk) etc, and the particular position has NEVER ceased to exist, in fact a worker is...
  8. C

    Non Genuine Redundancy

    I was advised me position was being made redundant throughout the entire organisation and replace with a new position Position Description: nearly identical with some additional tasks and $2.50 per hour pay rise. Guaranteed the position is mine on several occasion by the interview panel but had...
  9. C

    VIC Redundancy entitlement

    Hi, I work for a large company that announced it was closing one of it’s operations late last year. The only official documentation I have received states that my employment would be terminated at the end of March 2020 with a note at the end “to be confirmed at a later date”. Since then they...
  10. davemm

    SA genuine redundancy or unfair dismissal

    I did an online induction (middle of the week) to attend a worksite next following week. By the end of the week (induction week) i was made redundant due to unavailable work load required. also stated that they didnt win the project. due to union investigation they lied about not winning the...