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Learn/Linux_man_cn/mdadm.md

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madadm

常见Raid类型及基本特性,n代表磁盘数量

Raid级别 Raid0 Raid1 Raid5 Raid6 Raid10
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
磁盘数 n≥1 2n(n≥1) n≥3 n≥4 2n(n≥2)≥4
可用容量 全部 50% (n-1)/n (n-2)/n 50%
最大容错 0 n-1 1 n/2
读性能 n n n-1 n
写性能 n 1 n-1 n/2