PROVISIONING AND MANAGING REPLICATED DATA INSTANCES

摘要

A replicated database can be provisioned that provides primary and secondary replicas located in different data zones or geographical locations. The database can be installed on the primary replica, and both the primary and secondary replica can include a block level replication mechanism that allows any I/O operation to be replicated between the replicas. Any failure of the primary replica can be addressed by performing a failover operation to the secondary replica. A DNS name or other such approach can be used such that the name can be aliased to the secondary replica during a failover. The creation of the database and provisioning of the replicated instance can be initiated using a Web service call to a control environment. A replicated database can also be scaled according to storage or computing capacity with no disruption of service using a Web service call to the control environment.