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Updated on 2023-10-16 GMT+08:00

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Resilience

LTS provides a three-level reliability architecture and uses intra-AZ instance disaster recovery (DR), dual-AZ DR, and multiple log data copies to ensure service durability and reliability.

**Table 1** LTS reliability architecture
Reliability Solution	Description
Intra-AZ instance DR	In a single AZ, LTS implements instance DR in multi-instance mode and quickly rectifies faults to continuously provide services.
Multi-AZ DR	LTS supports cross-AZ DR. An AZ fault does not interrupt services.
Data DR	Data DR is implemented through log data replication.

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