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12 lines
506 B
12 lines
506 B
# **madadm**
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常见Raid类型及基本特性,n代表磁盘数量
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| Raid级别 | Raid0 | Raid1 | Raid5 | Raid6 | Raid10 |
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| :--: | :--: | :--: | :--: | :--: | :--: |
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| 别名 | 条带 | 镜像 | 分布式奇偶校检条带 | 双重奇偶校检条带 | 镜像加条带 |
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| 磁盘数 | n≥1 | 2n(n≥1) | n≥3 | n≥4 | 2n(n≥2)≥4 |
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| 可用容量 | 全部 | 50% | (n-1)/n | (n-2)/n | 50% |
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| 最大容错 | 0 | n-1 | 1 | | n/2 |
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| 读性能 | n | n | n-1 | | n |
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| 写性能 | n | 1 | n-1 | | n/2 |
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