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 RF = 1.333 NO
1 NO = 0.75 RF
例子:
将15 可靠性因素转换为网络高架冗余：
15 RF = 20 NO
| 可靠性因素 | 网络高架冗余 |
|---|---|
| 0.01 RF | 0.013 NO |
| 0.1 RF | 0.133 NO |
| 1 RF | 1.333 NO |
| 2 RF | 2.667 NO |
| 3 RF | 4 NO |
| 5 RF | 6.667 NO |
| 10 RF | 13.333 NO |
| 20 RF | 26.667 NO |
| 30 RF | 40 NO |
| 40 RF | 53.333 NO |
| 50 RF | 66.667 NO |
| 60 RF | 80 NO |
| 70 RF | 93.333 NO |
| 80 RF | 106.667 NO |
| 90 RF | 120 NO |
| 100 RF | 133.333 NO |
| 250 RF | 333.333 NO |
| 500 RF | 666.667 NO |
| 750 RF | 1,000 NO |
| 1000 RF | 1,333.333 NO |
| 10000 RF | 13,333.333 NO |
| 100000 RF | 133,333.333 NO |
规则