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HCS 6.5 provides the Cloud Server High Availability (CSHA) service.
The service provides cross-DC HA protection for ECSs in one city. When the production center is faulty, services on the protected ECS can be automatically or manually switched to the DR center. This service can be provisioned in a self-service manner. Users only need to specify the protected ECSs and the system will automatically create CSHA service instances.
The CSHA service provides DR protection only for ECSs. To ensure that the service network can continue to access the DR center after the ECS switchover and the operation and O&M functions of the cloud DC can continue to provide services, the HCS solution provides HA or DR design for each layer of the solution architecture. When the production site is faulty, key components or resources at each layer can be automatically or manually started or switched over at the other site to provide services for external systems.
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