High availability

Tablestore replicates data across multiple availability zones by default, providing 99.99% service availability and 12-nine data reliability at no extra cost.

Zone-redundant storage by default

Multi-zone replication: Tablestore automatically replicates your data to multiple replicas across different availability zones (AZs) within the same city. A write is acknowledged only after a majority of replicas confirm it, ensuring data durability even if a zone fails.
Zone-level disaster recovery: If a single data center fails, Tablestore maintains data integrity and service continuity.
No configuration required: The zone-redundant storage feature is enabled by default for all instances at no extra cost.

Note
If an instance is in a region that supports only a single AZ, locally redundant storage is provided by default.

SLA guarantee

Service availability: Guarantees 99.99% service availability.
Data reliability: Guarantees 12-nine data reliability (99.9999999999%).
Technical support: Provides 24/7 technical support and service response.