This topic lists the instance types available for YiTian read-only ApsaraDB RDS for MySQL instances running on the original ARM architecture, including the latest types and their specifications.
The maximum number of connections refers to the maximum number of processes that can connect to the instance simultaneously.
Both subscription and pay-as-you-go billing are supported. For pricing details, visit the ApsaraDB RDS buy page.
Read-only RDS instances that run RDS High-availability Edition
General-purpose instance types
General-purpose instances share CPU and memory resources with other instances on the same physical host. Use these instances for workloads with variable resource demands or cost-sensitive scenarios.
Instance type | CPU cores and memory | Maximum connections | Storage capacity |
mysqlro.n2m.small.1c | 1 core, 2 GB | 2,000 |
|
mysqlro.n2m.medium.1c | 2 cores, 4 GB | 4,000 | |
mysqlro.n4m.medium.1c | 2 cores, 8 GB | 6,000 | |
mysqlro.n8m.medium.1c | 2 cores, 16 GB | 8,000 | |
mysqlro.n2m.large.1c | 4 cores, 8 GB | 6,000 | |
mysqlro.n4m.large.1c | 4 cores, 16 GB | 8,000 | |
mysqlro.n8m.large.1c | 4 cores, 32 GB | 12,000 | |
mysqlro.n2m.xlarge.1c | 8 cores, 16 GB | 8,000 | |
mysqlro.n4m.xlarge.1c | 8 cores, 32 GB | 10,000 | |
mysqlro.n8m.xlarge.1c | 8 cores, 64 GB | 16,000 |
Dedicated instance types
Dedicated instances have CPU and memory resources exclusively allocated to a single instance. Use these instances for latency-sensitive workloads or production databases that require consistent, predictable performance.
Instance type | CPU cores and memory | Maximum connections | Storage capacity |
mysqlro.x4m.medium.1c | 2 cores, 8 GB | 6,000 |
|
mysqlro.x8m.medium.1c | 2 cores, 16 GB | 8,000 | |
mysqlro.x2m.large.1c | 4 cores, 8 GB | 6,000 | |
mysqlro.x4m.large.1c | 4 cores, 16 GB | 8,000 | |
mysqlro.x8m.large.1c | 4 cores, 32 GB | 12,000 | |
mysqlro.x2m.xlarge.1c | 8 cores, 16 GB | 8,000 | |
mysqlro.x4m.xlarge.1c | 8 cores, 32 GB | 10,000 | |
mysqlro.x8m.xlarge.1c | 8 cores, 64 GB | 16,000 | |
mysqlro.x2m.2xlarge.1c | 16 cores, 32 GB | 16,000 | |
mysqlro.x4m.2xlarge.1c | 16 cores, 64 GB | 20,000 | |
mysqlro.x8m.2xlarge.1c | 16 cores, 128 GB | 32,000 | |
mysqlro.x2m.4xlarge.1c | 32 cores, 64 GB | 32,000 | |
mysqlro.x4m.4xlarge.1c | 32 cores, 128 GB | 40,000 | |
mysqlro.x8m.4xlarge.1c | 32 cores, 256 GB | 64,000 | |
mysqlro.x4m.8xlarge.1c | 64 cores, 256 GB | 80,000 | |
mysqlro.x8m.8xlarge.1c | 64 cores, 512 GB | 128,000 |
What's next
To create a read-only instance, see Create a read-only ApsaraDB RDS for MySQL instance.
For the full list of read-only instance types across all architectures and billing methods, see Instance types for read-only ApsaraDB RDS instances.