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 FDR = 4 DC
1 DC = 0.25 FDR
例子:
将15 频级冗余转换为数据压缩:
15 FDR = 60 DC
| 频级冗余 | 数据压缩 |
|---|---|
| 0.01 FDR | 0.04 DC |
| 0.1 FDR | 0.4 DC |
| 1 FDR | 4 DC |
| 2 FDR | 8 DC |
| 3 FDR | 12 DC |
| 5 FDR | 20 DC |
| 10 FDR | 40 DC |
| 20 FDR | 80 DC |
| 30 FDR | 120 DC |
| 40 FDR | 160 DC |
| 50 FDR | 200 DC |
| 60 FDR | 240 DC |
| 70 FDR | 280 DC |
| 80 FDR | 320 DC |
| 90 FDR | 360 DC |
| 100 FDR | 400 DC |
| 250 FDR | 1,000 DC |
| 500 FDR | 2,000 DC |
| 750 FDR | 3,000 DC |
| 1000 FDR | 4,000 DC |
| 10000 FDR | 40,000 DC |
| 100000 FDR | 400,000 DC |