RDS for PostgreSQL
RDS for PostgreSQL
RDS for PostgreSQL
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V2(2022-01-01)
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- Documentation
RDS for PostgreSQL OverviewProduct specifications
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Product specifications
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This topic presents the instance specifications of RDS for PostgreSQL, helping you understand the specifications of the RDS for PostgreSQL instance. You can refer to this topic to learn about the specific configurations of each specification.
PostgreSQL instances support a high-availability architecture (one primary and one secondary node) and read-only nodes. The supported node specifications are shown in the following table:
Node specification | Cores | Memory size | Max connections | Storage space |
rds.postgres.1c2g | 1 core | 2 GB | 200 | 20 GB-3,000 GB |
rds.postgres.2c4g | 2 cores | 4 GB | 400 | 20 GB-3,000 GB |
rds.postgres.2c8g | 2 cores | 8 GB | 600 | 20 GB-3,000 GB |
rds.postgres.2c16g | 2 cores | 16 GB | 1600 | 20 GB-3,000 GB |
rds.postgres.4c8g | 4 cores | 8 GB | 800 | 20 GB-3,000 GB |
rds.postgres.4c16g | 4 cores | 16 GB | 1600 | 20 GB-3,000 GB |
rds.postgres.4c32g | 4 cores | 32 GB | 3200 | 20 GB-3,000 GB |
rds.postgres.8c16g | 8 cores | 16 GB | 1600 | 20 GB-6,000 GB |
rds.postgres.8c32g | 8 cores | 32 GB | 3200 | 20 GB-6,000 GB |
rds.postgres.8c64g | 8 cores | 64 GB | 6400 | 20 GB-6,000 GB |
rds.postgres.16c32g | 16 cores | 32 GB | 3200 | 20 GB-12,000 GB |
rds.postgres.16c64g | 16 cores | 64 GB | 6400 | 20 GB-12,000 GB |
rds.postgres.16c128g | 16 cores | 128 GB | 12800 | 20 GB-12,000 GB |
rds.postgres.32c128g | 32 cores | 128 GB | 12800 | 20 GB-12,000 GB |
rds.postgres.32c256g | 32 cores | 256 GB | 25600 | 20 GB-12,000 GB |
tip
- The maximum number of connections in the table represents the actual available connections for users (the connection capacity guaranteed for customers).
- Since the backend management component reserves a portion of connections for O&M operations, the result returned by executing show max_connections; is slightly larger than the maximum number of connections shown in the table.
- Storage space above 3000 GB is currently an allowlisted feature, available only in the China (Beijing), China (Shanghai), and China (Guangzhou) regions. If you need to use this feature, submit a ticket to contact us.
Last updated: 2026.08.27 18:19:12
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