Applications not requiring fault tolerance measures

Posted on 2006-05-11
Last Modified: 2013-11-15
I am trying to find out what applications would not require fault tolerance and why?

It seems to me every application would need some level.
Question by:Bellpm2006
    LVL 2

    Expert Comment

    Not sure I understand the question, can you elaborate a little more on what you mean ?

    Author Comment

    Thanks for your reply.

    Does every software application or hardware configuration need fault tolerance?

    What examples could you tell me which would not require FT?
    LVL 2

    Accepted Solution

    Hi, are you able to give more specific information as this is really quite a generic question.

    In a hardware setup, you can have a single device and not have any backup, standby or load sharing device, dependant on the nature of the device in the first place. eg: ethernet switch connecting some users to a local network.
    The most important question you need ask yourself is:
    1. How critical is the need to get these users back on the network ?

    If the decision is, "Critical" - then you will need to consider some "fault tolerance", if not then - there is no need.
    Hence your question "Does every software or hardware configuration NEED fault tolerance?" the answer is NO.
    It all depends on how important it is and this can be related back to software application also.

    eg: software application could be a "webserver" if the server crashed and it took 4hours to repair would the financial loss justify resiliency ?

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