> For the complete documentation index, see [llms.txt](https://drive3.gitbook.io/drive3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://drive3.gitbook.io/drive3/integration-with-distributed-systems/2.data-protection.md).

# 2.Data protection

multi-level fault tolerance to ensure the best balance of reliability, security and redundancy Adopt a multi-level fault-tolerant design, focusing on multi-copy fault tolerance with high redundancy, supplemented by erasure code fault tolerance with low redundancy. 

At the same time, based on the volume and application characteristics of each data, large-volume data uses erasure coding for fault tolerance, and small-volume data uses multi-copy fault tolerance.