K-out-of-N Without Repair
The formulas in the following table are used to compute MTTF and reliability for various redundant item loads and without item repair.
Source Data  | 
Models  | 
|
Load of redundant items  | 
MTTF  | 
Reliability  | 
100%  | 
  | 
  | 
0%  | 
  | 
  | 
0 < ν 100% 100%  | 
  | 
  | 
The source of the formulas is "Reliability Handbook" by B. A. Kozlov, I. A. Ushakov.