how to create allocation and input fault injection in c#.net?

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C#

actually i want to check my system reliability based on my system cpu usage and physcial memory usage and available space memory...

For example:(In my system)

Cpu Usage:99%

physical memory usage:7464KB

Available physical memory :250KB

Hard disk memory usage: 250GB

Hard Disk memory available:33KB



In this situation i wanna copy 50KB size file into my system means it was failure to copy this files due to unavailable space...like that i wanna do allocation fault injection and as well as input fault injection in c# and wanna check my system reliablity and system fault tolerance...
How can i implement this concept in c#?