Read-only Instance
Last Updated：2020-07-20
RDS for MySQL master instance
Introduction
Application scenario: The read-only instance is used for realizing Read/Write Separation and undertaking the service’s read traffic.
Note: It only supports MySQL rather than SQL server and PostgreSQL for now.
Specification
The instance specification supported by read-only instance is as follows:
- Storage disk type: Local SSD disk, and local NVMe disk.
- Storage space: Support 5 GB ～ 3000 GB
- Memory plus CPU: Support 1-core and 1 G(minimum package) ~ 56-core 480 G (maximum package)
| Product Line | CPU/Core | Memory/GB | Maximum Local Disk | Maximum Linking Number |
|---|---|---|---|---|
| Small and micro type | 1 | 1 | 200G | 300 |
| - | 1 | 2 | 500G | 560 |
| Standard | 1 | 4 | 1000GB | 1050 |
| - | 2 | 8 | 1000GB | 2000 |
| - | 4 | 16 | 3000GB | 4000 |
| - | 8 | 32 | 3000GB | 8000 |
| - | 16 | 64 | 3000GB | 16000 |
| - | 32 | 128 | 3000GB | 32000 |
| Enhanced Memory Type | 1 | 8 | 1000GB | 2000 |
| - | 2 | 16 | 3000GB | 4000 |
| - | 4 | 32 | 3000GB | 8000 |
| - | 8 | 64 | 3000GB | 16000 |
| - | 16 | 128 | 3000GB | 32000 |
| - | 32 | 256 | 3000GB | 64000 |
| - | 56 | 480 | 3000GB | 100000 |
| Enhanced CUP Type | 2 | 4 | 1000GB | 1050 |
| - | 6 | 8 | 1000GB | 2000 |
| - | 8 | 16 | 3000GB | 4000 |
| - | 12 | 24 | 3000GB | 6000 |
| - | 16 | 32 | 3000GB | 8000 |
| - | 20 | 48 | 3000GB | 12000 |
| - | 20 | 64 | 3000GB | 16000 |