Subnets and subnet groups - Amazon MemoryDB
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Subnets and subnet groups

A subnet group is a collection of subnets (typically private) that you can designate for your clusters running in an Amazon Virtual Private Cloud (VPC) environment.

When you create a cluster in an Amazon VPC, you can specify a subnet group or use the default one provided. MemoryDB uses that subnet group to choose a subnet and IP addresses within that subnet to associate with your nodes.

This section covers how to create and leverage subnets and subnet groups to manage access to your MemoryDB resources.

For more information about subnet group usage in an Amazon VPC environment, see Step 3: Authorize access to the cluster.

Supported MemoryDB AZ IDs
Region Name/Region Supported AZ IDs

US East (Ohio) Region

us-east-2

use2-az1, use2-az2, use2-az3

US East (N. Virginia) Region

us-east-1

use1-az1, use1-az2, use1-az4, use1-az5, use1-az6

US West (N. California) Region

us-west-1

usw1-az1, usw1-az2, usw1-az3

US West (Oregon) Region

us-west-2

usw2-az1, usw2-az2, usw2-az3, usw2-az4

Canada (Central) Region

ca-central-1

cac1-az1, cac1-az2, cac1-az4

Asia Pacific (Hong Kong) Region

ap-east-1

ape1-az1, ape1-az2, ape1-az3

Asia Pacific (Mumbai) Region

ap-south-1

aps1-az1, aps1-az2, aps1-az3

Asia Pacific (Tokyo) Region

ap-northeast-1

apne1-az1, apne1-az2, apne1-az4

Asia Pacific (Seoul) Region

ap-northeast-2

apne2-az1, apne2-az2, apne2-az3

Asia Pacific (Singapore) Region

ap-southeast-1

apse1-az1, apse1-az2, apse1-az3

Asia Pacific (Sydney) Region

ap-southeast-2

 apse2-az1, apse2-az2, apse2-az3

Europe (Frankfurt) Region

eu-central-1

euc1-az1, euc1-az2, euc1-az3

Europe (Ireland) Region

eu-west-1

euw1-az1, euw1-az2, euw1-az3

Europe (London) Region

eu-west-2

euw2-az1, euw2-az2, euw2-az3

EU (Paris) Region

eu-west-3

euw3-az1, euw3-az2, euw3-az3

Europe (Stockholm) Region

eu-north-1

eun1-az1, eun1-az2, eun1-az3

Europe (Milan) Region

eu-south-1

eus1-az1, eus1-az2, eus1-az3

South America (São Paulo) Region

sa-east-1

sae1-az1, sae1-az2, sae1-az3

China (Beijing) Region

cn-north-1

cnn1-az1, cnn1-az2

China (Ningxia) Region

cn-northwest-1

cnw1-az1, cnw1-az2, cnw1-az3
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