New in Wolfram
Mathematica
8: Parametric Probability Distributions
◄
previous

next
►
Core Algorithms
Find Operational Rules for a Data Center
A data center has 10000 disk drives and a disk fails on a given day with probability
. Find the number of disks to keep onhand so that all failures in day can be replaced with probability 99.9%.
In[1]:=
X
prob = Probability[n <= k, n \[Distributed] PoissonDistribution[10^4 10^3], Assumptions > k \[Element] Integers]
Out[1]=
In[2]:=
X
Minimize[{k, prob > 999/1000 && k < 30}, k, Integers]
Out[2]=