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 NO = 0.75 RF
1 RF = 1.333 NO
例子:
将15 网络高架冗余转换为可靠性因素：
15 NO = 11.25 RF
| 网络高架冗余 | 可靠性因素 |
|---|---|
| 0.01 NO | 0.007 RF |
| 0.1 NO | 0.075 RF |
| 1 NO | 0.75 RF |
| 2 NO | 1.5 RF |
| 3 NO | 2.25 RF |
| 5 NO | 3.75 RF |
| 10 NO | 7.5 RF |
| 20 NO | 15 RF |
| 30 NO | 22.5 RF |
| 40 NO | 30 RF |
| 50 NO | 37.5 RF |
| 60 NO | 45 RF |
| 70 NO | 52.5 RF |
| 80 NO | 60 RF |
| 90 NO | 67.5 RF |
| 100 NO | 75 RF |
| 250 NO | 187.5 RF |
| 500 NO | 375 RF |
| 750 NO | 562.5 RF |
| 1000 NO | 750 RF |
| 10000 NO | 7,500 RF |
| 100000 NO | 75,000 RF |
规则