This topic provides an overview of the primary instance types that are supported for ApsaraDB RDS for SQL Server. This overview includes the most recent instance types, the earlier instance types, and the specifications for each instance type.

Note The memory capacity that is supported by an instance type includes the memory that is occupied by the RDS-related management services, the database service, and the underlying operating system. For example, the memory capacity includes the memory reserved for BIOS, the memory occupied by the kernel of the operating system, and the memory occupied by the hypervisor. Therefore, the available memory that you can view may be less than the memory capacity that is supported by the instance type.

Primary ApsaraDB RDS for SQL Server instances

Generation PostgreSQL version Instance family Instance type CPU and memory Maximum number of connections Maximum IOPS Storage capacity
Basic Edition 2012 EE General-purpose rds.mssql.s2.large 2 cores, 4 GB 1200 2000 20GB-16000GB
rds.mssql.s2.xlarge 2 cores, 8 GB 2000 4000
rds.mssql.s3.large 4 cores, 8 GB 2000 5000
rds.mssql.m1.medium 4 cores, 16 GB 4000 7000
rds.mssql.c1.large 8 cores, 16 GB 4000 8000
rds.mssql.c1.xlarge 8 cores, 32 GB 8000 12000
rds.mssql.c2.xlarge 16 cores, 64 GB 16000 14000
mssql.x4.xlarge.e1 8 cores, 32 GB Unlimited See About Cloud Disk IOPS 150GB
mssql.x4.2xlarge.e1 16 cores, 64 GB
mssql.x4.4xlarge.e1 32 cores, 128 GB
mssql.x8.xlarge.e1 8 cores, 64 GB
mssql.x8.2xlarge.e1 16 cores, 128 GB
mssql.x8.4xlarge.e1 32 cores, 256 GB
2016 EE General-purpose mssql.x4.medium.e1 2 cores, 8 GB Unlimited See About Cloud Disk IOPS 20GB-16000GB
mssql.x4.large.e1 4 cores, 16 GB
mssql.x4.xlarge.e1 8 cores, 32 GB
mssql.x4.2xlarge.e1 16 cores, 64 GB
mssql.x4.4xlarge.e1 32 cores, 128 GB
mssql.x4.8xlarge.e1 64 cores, 256 GB
mssql.x8.medium.e1 2 cores, 16 GB
mssql.x8.large.e1 4 cores, 32 GB
mssql.x8.xlarge.e1 8 cores, 64 GB
mssql.x8.2xlarge.e1 18-core 128GB
mssql.x8.4xlarge.e1 32 cores, 256 GB
mssql.x8.8xlarge.e1 64 cores, 512 GB
2012 Web and 2016 Web Dedicated mssql.x2.medium.w1 2 cores, 4 GB Unlimited See About Cloud Disk IOPS 20GB-16000GB
mssql.x4.medium.w1 2 cores, 8 GB
mssql.x2.large.w1 4 cores, 8 GB
mssql.x4.large.w1 4 cores, 16 GB
mssql.x2.xlarge.w1 8 cores, 16 GB
mssql.x4.xlarge.w1 8 cores, 32 GB
mssql.x2.2xlarge.w1 16 cores, 32 GB
mssql.x4.2xlarge.w1 16 cores, 64 GB
High-availability Edition 2008 R2 Local Edition (Sale Suspended) General-purpose rds.mssql.s1.large 2 cores, 2 GB Unlimited See About Cloud Disk IOPS 10GB-2000GB
rds.mssql.s2.large 2 cores, 4 GB 1200 2000
rds.mssql.s2.xlarge 2 cores, 8 GB 2000 4000
rds.mssql.s3.large 4 cores, 8 GB 2000 5000
rds.mssql.m1.medium 4 cores, 16 GB 4000 7000
rds.mssql.c1.large 8 cores, 16 GB 4000 8000
rds.mssql.c1.xlarge 8 cores, 32 GB 8000 12000
rds.mssql.c2.xlarge 16 cores, 64 GB 16000 14000
Dedicated mssql.x8.medium.2 2 cores, 16 GB 2500 4500 250GB
mssql.x8.large.2 4 cores, 32 GB 5000 9000 500GB
mssql.x8.xlarge.2 8 cores, 64 GB 10000 18000 1000GB
mssql.x8.2xlarge.2 16 cores, 128 GB 20000 36000 2000GB
Dedicated host rds.mssql.st.d13 30 cores, 220 GB 64000 20000 2000GB
rds.mssql.st.h43 60 CPU cores, 470 GB 100000 50000 3000GB
2008 R2 Cloud Disk Edition, 2012 Enterprise Edition, 2016 Enterprise Edition Dedicated mssql.x4.medium.e2 2 cores, 8 GB Unlimited See About Cloud Disk IOPS 20GB-16000GB
mssql.x8.medium.e2 2 cores, 16 GB
mssql.x4.large.e2 4 cores, 16 GB
mssql.x8.large.e2 4 cores, 32 GB
mssql.x4.xlarge.e2 8 cores, 32 GB
mssql.x8.xlarge.e2 8 cores, 64 GB
mssql.x4.2xlarge.e2 16 cores, 64 GB
mssql.x8.2xlarge.e2 16 cores, 128 GB
mssql.x4.3xlarge.e2 24 cores, 96 GB
mssql.x4.4xlarge.e2 32 cores, 128 GB
mssql.x8.4xlarge.e2 32 cores, 256 GB
mssql.x8.7xlarge.e2 56 cores, 480 GB
mssql.x4.8xlarge.e2 64 cores, 256 GB
mssql.x8.8xlarge.e2 64 cores, 512 GB
2012 Standard Edition, 2016 Standard Edition, 2017 Standard Edition, 2019 Standard Edition Dedicated mssql.x4.medium.s2 2 cores, 8 GB
mssql.x4.large.s2 4 cores, 16 GB
mssql.x4.xlarge.s2 8 cores, 32 GB
mssql.x4.2xlarge.s2 16 cores, 64 GB
mssql.x4.3xlarge.s2 24 cores, 96 GB
Always On 2017 Enterprise Edition, 2019 Enterprise Edition Dedicated mssql.x4.medium.e2 2 cores, 8 GB Unlimited See About Cloud Disk IOPS 20GB-16000GB
mssql.x4.large.e2 4 cores, 16 GB
mssql.x4.xlarge.e2 8 cores, 32 GB
mssql.x4.2xlarge.e2 16 cores, 64 GB
mssql.x4.4xlarge.e2 32 cores, 128 GB
mssql.x4.8xlarge.e2 64 cores, 256 GB
mssql.x8.medium.e2 2 cores, 16 GB
mssql.x8.large.e2 4 cores, 32 GB
mssql.x8.xlarge.e2 8 cores, 64 GB
mssql.x8.2xlarge.e2 16 cores, 128 GB
mssql.x8.4xlarge.e2 32 cores, 256 GB
mssql.x8.8xlarge.e2 64 cores, 512 GB

Phased-out ApsaraDB RDS for SQL Server instance types

The following table lists phased-out ApsaraDB RDS for SQL Server instance types. These instance types are no longer available to new instances.

Instance type CPU cores Memory capacity Maximum connections Maximum IOPS
rds.mssql.s1.small 1 2 GB 600 1,000
rds.mss1.small 6 1,000 MB 100 500
rds.mss1.mid 8 2,000 MB 200 1,000
rds.mss1.standard 9 4,000 MB 400 2,000
rds.mss1.large 10 6,000 MB 600 3,000
rds.mss1.xlarge 11 8,000 MB 800 4,000
rds.mss1.2xlarge 12 12,000 MB 1,200 6,000
rds.mss1.4xlarge 13 24,000 MB 2,000 12,000
rds.mss1.8xlarge 13 48,000 MB 2,000 14,000
rds.mssql.c2.xlp2 16 96 GB 24,000 16,000
pg.n1.micro.1 1 1 GB 100 See Maximum IOPS for standard SSDs and ESSDs.