Questions tagged [reliability]

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8 votes
13 answers

Why do we rely on computers in critical fields?

I assume that computers make many mistakes (like errors, bugs, glitches, etc.), which can be observed from the amount of questions asked everyday on different communities (like Stack Overflow) showing ...
AZeed's user avatar
  • 217
3 votes
2 answers

Reliability of a service

Assume that I need to determine the reliability of a service. The service includes component a (software reliability=0.95) and component b (software reliability=0.98). I have 2 computers: Computer A (...
Shayne's user avatar
  • 33
2 votes
0 answers

Error detection code supporting arithmetic

I am looking for error detection codes, which support addition in the encoded domain and are separate (a tuple of ($N$, $R(N)$), where $N$ denotes the functional value and $R(N)$ its redundancy). So ...
Martin's user avatar
  • 21
2 votes
0 answers

How to build a reliable bank transfer? [closed]

I recently came across a problem where I was charged $50 by a merchant with my bank card but there was a communication error, so the money was taken from my account but never arrived in the merchants ...
Mattigins's user avatar
  • 121
4 votes
1 answer

Why are computers so reliable?

In any complicated system, there is always some scope for error. When I program on my computer, the system computes perfectly each time. 1+1 always turns out to be 2. We take reliability of the ...
johngreen's user avatar
  • 141
7 votes
2 answers

Why is the Mean Time To Failure of multiple disks calculated via division and not multiplication?

I am reading about disk redudancy. I read the following: Suppose that the mean time to failure of a disk is 100,000 hours. Then the mean time to failure of some disk in an array of 100 disks ...
Jim's user avatar
  • 183
1 vote
1 answer

Null Hypothesis in Analysis and Testing

I have my end of year exams next Thursday. I'm generally doing fine but I am having some major issues with this strand of my course, this has to be the biggest issue I have. So, here is the question ...
Johnathan Brown's user avatar
2 votes
2 answers

What is the system's mean time to failure?

I have the following homework problem: A 10 TB disk drive has an MTTF of 6,000,000 hours. How much data can we store in a system comprised of these disks, if we want the system MTTF to be at least 1....
user6722's user avatar