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ApsaraDB RDS:Instance types for YiTian primary ApsaraDB RDS for MySQL instances (original ARM architecture)

Last Updated:Apr 01, 2025

This topic provides an overview of instance types for YiTian primary ApsaraDB RDS for MySQL instances that originally use the ARM architecture. The overview includes the most recent instance types and the specifications for each instance type.

Note
  • The YiTian product type is supported for RDS instances that run MySQL 8.0 and MySQL 5.7.

  • Instance types that are supported for YiTian RDS instances on RDS High-availability Edition or RDS Cluster Edition are available in the following regions: China (Hangzhou), China (Shanghai), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Shenzhen), China (Guangzhou), China (Chengdu), Indonesia (Jakarta), China (Hong Kong), and Singapore. The instance types will be available in other regions in phases. The ApsaraDB RDS buy page displays the regions that support the instance types.

  • The instance types for YiTian RDS instances that run RDS Basic Edition are supported in specific regions. The regions displayed on the ApsaraDB RDS buy page prevail.

  • The instance types vary based on the region of your RDS instance. The instance types that are displayed on the ApsaraDB RDS buy page shall prevail.

  • The maximum number of connections in this topic indicates the maximum number of processes that can be connected to the RDS instance at a time.

  • General-purpose instance types cannot ensure the maximum IOPS and maximum I/O bandwidth. If your workloads are sensitive to IOPS, we recommend that you select dedicated instance types.

  • The instance types for YiTian RDS instances that run RDS High-availability Edition and RDS Cluster Edition support automatic storage expansion and automatic performance expansion. For more information, see Configure automatic expansion for cloud disks.

Instance types available for RDS Basic Edition

General-purpose instance types

Instance type

Number of CPU cores and memory capacity

Maximum connections

mysql.n1e.small.1 (YiTian)

1 core, 1 GB

300

mysql.n2e.small.1 (YiTian)

1 core, 2 GB

600

mysql.n1e.medium.1 (YiTian)

2 cores, 2 GB

1,000

mysql.n2e.medium.1 (YiTian)

2 cores, 4 GB

2,000

Instance types available for RDS High-availability Edition

General-purpose instance types

Instance type

Number of CPU cores and memory capacity

Maximum connections

Storage capacity

mysql.n2m.small.2c

1 core, 2 GB

2,000

  • PL 1 ESSD: 20 GB to 64,000 GB

  • PL2 ESSD: 500 GB to 64,000 GB

  • PL3 ESSD: 1,500 GB to 64,000 GB

  • Standard SSD: 20 GB to 6,000 GB

mysql.n2m.medium.2c

2 cores, 4 GB

4,000

mysql.n4m.medium.2c

2 cores, 8 GB

6,000

mysql.n8m.medium.2c

2 cores, 16 GB

8,000

mysql.n2m.large.2c

4 cores, 8 GB

6,000

mysql.n4m.large.2c

4 cores, 16 GB

8,000

mysql.n8m.large.2c

4 cores, 32 GB

12,000

mysql.n2m.xlarge.2c

8 cores, 16 GB

8,000

mysql.n4m.xlarge.2c

8 cores, 32 GB

10,000

mysql.n8m.xlarge.2c

8 cores, 64 GB

16,000

Dedicated instance types

Formulas to calculate the maximum I/O bandwidth of a cloud disk:

  • General ESSDs:

    • I/O burst disabled: min{350 + I/O bandwidth increment, Maximum I/O bandwidth supported by the instance type, 120 + 0.5 × Storage capacity + I/O bandwidth increment}

    • I/O burst enabled: min{4000, Maximum I/O bandwidth supported by the instance type}

  • ESSDs:

    • PL1 ESSD: min{120 + 0.5 × Storage capacity, 350, Maximum I/O bandwidth supported by the instance type}

    • PL2 ESSD: min{120 + 0.5 × Storage capacity, 750, Maximum I/O bandwidth supported by the instance type}

    • PL3 ESSD: min{120 + 0.5 × Storage capacity, 4000, Maximum I/O bandwidth supported by the instance type}

Instance type

Number of CPU cores and memory capacity

Maximum connections

Maximum IOPS

Maximum I/O bandwidth supported by the instance type (MB/s)

Storage capacity

mysql.x4m.medium.2c

2 cores, 8 GB

6,000

10,000

128

  • PL 1 ESSD: 20 GB to 64,000 GB

  • PL2 ESSD: 500 GB to 64,000 GB

  • PL3 ESSD: 1,500 GB to 64,000 GB

  • Standard SSD: 20 to 6,000 GB

mysql.x8m.medium.2c

2 cores, 16 GB

8,000

10,000

128

mysql.x2m.large.2c

4 cores, 8 GB

6,000

40,000

256

mysql.x4m.large.2c

4 cores, 16 GB

8,000

40,000

256

mysql.x8m.large.2c

4 cores, 32 GB

12,000

40,000

256

mysql.x2m.xlarge.2c

8 cores, 16 GB

8,000

50,000

384

mysql.x4m.xlarge.2c

8 cores, 32 GB

10,000

50,000

384

mysql.x8m.xlarge.2c

8 cores, 64 GB

16,000

50,000

384

mysql.x2m.2xlarge.2c

16 cores, 32 GB

16,000

80,000

640

mysql.x4m.2xlarge.2c

16 cores, 64 GB

20,000

80,000

640

mysql.x8m.2xlarge.2c

16 cores, 128 GB

32,000

80,000

640

mysql.x2m.4xlarge.2c

32 cores, 64 GB

32,000

125,000

1,024

mysql.x4m.4xlarge.2c

32 cores, 128 GB

40,000

125,000

1,024