Reliability Functions

Cluster HA

DCS provides master/standby, Proxy Cluster, and Redis Cluster instances. Each instance has multiple nodes for instance-level DR. If the master node is faulty, a failover is triggered automatically. Services may be interrupted for less than half a minute during exception detection and the failover.

Data Backup and Restoration

Data in DCS instances can be backed up to OBS. If a DCS instance becomes faulty, data in the instance can be restored from the backup. DCS instances support scheduled and manual backup. Backup is scheduled in days, can be stored for a maximum of seven days, and at least one backup file is retained. Users can perform manual backup before service system maintenance, upgrade, and other high-risk operations. The retention period is not limited.

Cross-AZ DR

Cross-AZ DR is supported for master/standby, Redis Cluster, and Proxy Cluster DCS instances. If one AZ is faulty, nodes in another AZ are not affected. The standby node automatically becomes the master node and takes over services.

Monitoring

Using Cloud Eye, you can monitor DCS resources such as vCPUs, memory, disks, and networks.

For details, see DCS Metrics.