This topic provides an overview of read-only ApsaraDB RDS for SQL Server instance types. This overview includes the most recent instance types and the specifications for each instance type.

  • The subscription and pay-as-you-go billing methods are supported for read-only ApsaraDB RDS for SQL Server instances. For more information, see Read-only ApsaraDB RDS instance types. For more information about the prices, go to the buy page.
  • RDS instances that use standard SSDs or enhanced SSDs (ESSDs) are deployed on Elastic Compute Service (ECS) instances. The performance of these RDS instances varies based on the instance types of the ECS instances. For more information, see Instance family.

Read-only RDS instances

Role SQL Server version Instance family Instance type CPU and memory specifications Maximum number of connections Maximum IOPS Storage capacity
Read-only instance SQL Server 2017 EE and SQL Server 2019 EE General-purpose instance family rds.mssql.s2.large 2 cores, 4 GB Unlimited For more information, see Maximum IOPS for standard SSDs and ESSDs. 20 GB to 4,000 GB
rds.mssql.s3.large 4 cores, 8 GB
rds.mssql.c1.large 8 cores, 16 GB
rds.mssql.s2.xlarge 2 cores, 8 GB
rds.mssql.m1.medium 4 cores, 16 GB
rds.mssql.c1.xlarge 8 cores, 32 GB
rds.mssql.c2.xlarge 16 cores, 64 GB
Dedicated instance family 2 cores, 8 GB 4 cores, 16 GB 8 cores, 32 GB 16 cores, 64 GB 32 cores, 128 GB 64 cores, 256 GB 2 cores, 16 GB 4 cores, 32 GB 8 cores, 64 GB 16 cores, 128 GB 32 cores, 256 GB 56 cores, 480 GB 64 cores, 512 GB