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 CC = 0.8 PB
1 PB = 1.25 CC
例子:
将15 通道容量冗余转换为奇偶校验的冗余：
15 CC = 12 PB
| 通道容量冗余 | 奇偶校验的冗余 |
|---|---|
| 0.01 CC | 0.008 PB |
| 0.1 CC | 0.08 PB |
| 1 CC | 0.8 PB |
| 2 CC | 1.6 PB |
| 3 CC | 2.4 PB |
| 5 CC | 4 PB |
| 10 CC | 8 PB |
| 20 CC | 16 PB |
| 30 CC | 24 PB |
| 40 CC | 32 PB |
| 50 CC | 40 PB |
| 60 CC | 48 PB |
| 70 CC | 56 PB |
| 80 CC | 64 PB |
| 90 CC | 72 PB |
| 100 CC | 80 PB |
| 250 CC | 200 PB |
| 500 CC | 400 PB |
| 750 CC | 600 PB |
| 1000 CC | 800 PB |
| 10000 CC | 8,000 PB |
| 100000 CC | 80,000 PB |
规则