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ApsaraDB RDS:DuckDB-based analytical primary instance specifications

Last Updated:Feb 12, 2026

This topic describes the specifications of RDS DuckDB-based analytical primary instances. It covers computing resources and storage capacity. Use this topic to review detailed parameters for each specification. A single instance supports up to 128 TB of storage.

Cluster Edition

Family

Specification code

CPU

Memory

Default maximum connections

Maximum IOPS

Storage space

Dedicated

myduck.x2.large.xc

4 vCPUs

8 GB

6000

20000

20 GB to 128000 GB

myduck.x4.large.xc

4 vCPUs

16 GB

8000

myduck.x8.large.xc

4 vCPUs

32 GB

12000

myduck.x2.xlarge.xc

8 vCPUs

16 GB

12000

25000

myduck.x4.xlarge.xc

8 vCPUs

32 GB

12000

myduck.x8.xlarge.xc

8 vCPUs

64 GB

16000

myduck.x2.2xlarge.xc

16 vCPUs

32 GB

16000

40000

myduck.x4.2xlarge.xc

16 vCPUs

64 GB

20000

myduck.x8.2xlarge.xc

16 vCPUs

128 GB

32000

myduck.x2.4xlarge.xc

32 vCPUs

64 GB

32000

60000

myduck.x4.4xlarge.xc

32 vCPUs

128 GB

40000

myduck.x8.4xlarge.xc

32 vCPUs

256 GB

64000

myduck.x2.8xlarge.xc

64 vCPUs

128 GB

64000

120000

myduck.x4.8xlarge.xc

64 vCPUs

256 GB

80000

150000

myduck.x8.8xlarge.xc

64 vCPUs

512 GB

128000

150000

References