In home setups, RAID is usually not needed, except for people who require exceptional performance or a very high level of redundancy.

RAID通常不需要在本地安装，除非人们想要额外的性能或非常高的冗余水平。

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MongoDB provides replication features in a master-slave configuration (similar to MySQL) for the purposes of failover and redundancy, ensuring a high level of consistency between nodes.

为了实现故障转移和冗余，MongoDB在主从配置中提供了复制特性(类似于MySQL)，从而确保节点之间的高度一致性。

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Based on this technique, this paper proposes a high-availability data objects placement algorithm with mirroring, which groups objects into redundancy sets by using RAID at the algorithm level.

借鉴RAID的方法，在算法一级实现数据的冗余分布，提出基于镜像的高可用数据对象布局算法。

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