This topic introduces the basic concepts of ApsaraDB MyBase.
| Term | English | Description |
|---|---|---|
| Region | Region | The geographic location of a data center. You must specify a region when you create a host or a database instance. You cannot change the region after the creation. |
| Zone | Zone | A physical area where an independent power grid and an independent network are provided within a region. The network latency between instances within the same zone is shorter than that between instances in different zones. |
| ApsaraDB MyBase | Dedicated Cluster | A cluster that consists of multiple hosts in the same region. A dedicated cluster provides you exclusive resources. You can deploy multiple database instances in a dedicated cluster. Hosts in a dedicated cluster can reside in different zones but cannot reside in different regions. For more information, see Create a dedicated cluster. |
| Host | Host | A virtual server. For more information, see Create a host. |
| Instance | Instance | An instance is a virtual database server. You can create and manage multiple databases in an instance. For more information, see Create an instance. |
| Image | Image | Provides the operating system of a host. The Linux and Windows Server operating systems are supported. |
| Virtual private cloud (VPC) | Virtual Private Cloud | A logically isolated private network that is deployed based on Alibaba Cloud. You can configure private IP address ranges, routing tables, and gateways for VPCs. |