Help Center> Cloud Trace Service> Service Overview> Security> Resilience

Updated on 2022-11-15 GMT+08:00

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Resilience

CTS 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** CTS reliability architecture
Reliability Solution	Description
Intra-AZ instance DR	In a single AZ, CTS implements instance DR in multi-instance mode and quickly rectifies faults to continuously provide services.
Multi-AZ DR	CTS supports cross-AZ DR. An AZ fault does not interrupt continuous services.
Data DR	Multiple copies of log data are used to implement data DR.

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