系统内冗余或重复数据的度量，表明存储和潜在性能问题效率低下。
1 CR = 0.875 RF
1 RF = 1.143 CR
例子:
将15 频道冗余转换为可靠性因素：
15 CR = 13.125 RF
| 频道冗余 | 可靠性因素 |
|---|---|
| 0.01 CR | 0.009 RF |
| 0.1 CR | 0.088 RF |
| 1 CR | 0.875 RF |
| 2 CR | 1.75 RF |
| 3 CR | 2.625 RF |
| 5 CR | 4.375 RF |
| 10 CR | 8.75 RF |
| 20 CR | 17.5 RF |
| 30 CR | 26.25 RF |
| 40 CR | 35 RF |
| 50 CR | 43.75 RF |
| 60 CR | 52.5 RF |
| 70 CR | 61.25 RF |
| 80 CR | 70 RF |
| 90 CR | 78.75 RF |
| 100 CR | 87.5 RF |
| 250 CR | 218.75 RF |
| 500 CR | 437.5 RF |
| 750 CR | 656.25 RF |
| 1000 CR | 875 RF |
| 10000 CR | 8,750 RF |
| 100000 CR | 87,500 RF |
规则