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 %R = 0.5 FDR
1 FDR = 2 %R
例子:
将15 冗余百分比转换为频级冗余：
15 %R = 7.5 FDR
| 冗余百分比 | 频级冗余 |
|---|---|
| 0.01 %R | 0.005 FDR |
| 0.1 %R | 0.05 FDR |
| 1 %R | 0.5 FDR |
| 2 %R | 1 FDR |
| 3 %R | 1.5 FDR |
| 5 %R | 2.5 FDR |
| 10 %R | 5 FDR |
| 20 %R | 10 FDR |
| 30 %R | 15 FDR |
| 40 %R | 20 FDR |
| 50 %R | 25 FDR |
| 60 %R | 30 FDR |
| 70 %R | 35 FDR |
| 80 %R | 40 FDR |
| 90 %R | 45 FDR |
| 100 %R | 50 FDR |
| 250 %R | 125 FDR |
| 500 %R | 250 FDR |
| 750 %R | 375 FDR |
| 1000 %R | 500 FDR |
| 10000 %R | 5,000 FDR |
| 100000 %R | 50,000 FDR |
规则