Region

This function provides an environment where multiple regions can be used with a single IaaS account. Such an environment can be used to develop large-scale services or as a measure against disaster.

Regions are geographical areas of Japan or other countries that are separated, such as would be created by splitting along a north-south or east-west divide. Regions are connected via the Internet to form a Wide Area Network.

For protection against disasters that occur in regions where the system is running, you can use multiple regions to prepare a backup system for service continuity and achieve high availability for your business system.

Figure: Example of Using Multiple Regions



Available Regions

The following regions are provided.
Table 1. List of Available Regions
Country Name of Region Abbreviation Region Identifier
Japan Eastern Japan Region 1 Japan East1 jp-east-1
Eastern Japan Region 2 Japan East2 jp-east-2
Western Japan Region 1 Japan West1 jp-west-1
Western Japan Region 2 Japan West2 jp-west-2
Note: Eastern Japan Region 1 and Eastern Japan Region 2 are in the same physical region. When using multiple regions as a measure against disasters, please use them in combination with other regions.

IaaS Service Configurations

  • Global Services

    Global services have a single API endpoint as IaaS, and provide resources and services that are not dependent on region. They are used by acquiring global tokens.

  • Regional Services

    Regional services have a single API endpoint for each region, and provide resources and services within the region. They are used by acquiring regional tokens.

Tip:

For details, refer to the following manuals:

  • Explanations of services in IaaS Service Specification
  • IaaS API Reference Manual

Figure: Concept of Global Services and Regional Services



Functions Included

  • Region Activation Function

    This function is used to add a new region to the regions that are currently being used.

    Tip: When a contract number (domain) is acquired, "Eastern Japan Region 2 (jp-east-2)" can be used as the default region.

    Figure: How to Use a Different Region



  • Function for Acquiring Information about Regions Currently in Use

    You can acquire a list of regions that are currently in use, as well as their availability ("active" or "ready").

  • Authentication Functions

    • Global Authentication Function

      The global token acquisition function is provided to allow the use of global services.

      Tip: Use the global user management service to acquire tokens.

    • Regional Authentication Function

      The regional token acquisition function is provided to allow the use of regional services.

      Tip: Use the regional user management service to acquire tokens.

  • API Endpoint

    For the API endpoints accessed in order to use the services, refer to Endpoint.

How to Use This Service

Figure: How to Start Using Multiple Regions



Points to Note

  • Common

    • Once you have started using a region, you cannot stop using that region.

    • Global tokens and regional tokens that are acquired with the authentication function cannot be used interchangeably. Use tokens correctly according to the services and resources that you want to use.

      • Use of regional services with global tokens
      • Use of global services with regional tokens

  • Global Services

    • Global User Management Service

      • If you use the global user management service to create or change resources, there will be a time lag until all regions are synchronized.

        Tip: You can use the "Check Synchronization between Regions" function provided by the global user management service to check if synchronization is complete in the region you want to use.

    • DNS Service

      Important:

      The following operations are required to use a DNS service.

      • Create a project in "Eastern Japan Region 1 (jp-east-1)," and register in that project the user who will use the DNS service.
      • Use a regional token.

  • Regional Services

    • Email Delivery Service

      Note: Only "Eastern Japan Region 1 (jp-east-1)" is provided.