This topic provides an overview of primary ApsaraDB RDS instance types. You can view the latest and historical specifications of each instance type.

ApsaraDB RDS allows you to create read-only instances to scale the read capability of your database system. For more information about read-only instance types, see Read-only instance types.

After you select a primary instance type, you can create an instance and perform subsequent operations.

IOPS

The maximum input/output operations per second (IOPS) of an RDS instance equipped with local SSDs varies based on the instance type. The maximum IOPS of an RDS instance equipped with standard SSDs or enhanced SSDs (ESSDs) varies based on the instance type and storage capacity. The following table provides formulas to calculate the maximum IOPS of an RDS instance equipped with standard SSDs or ESSDs.

Note If the throughput of an RDS instance equipped with standard SSDs or ESSDs reaches the upper limit, the IOPS of the RDS instance also decreases.
Storage type ESSD Standard SSD
Performance level PL3 PL2 PL1 -

Maximum IOPS

(The storage capacity is measured in GB.)

min{1800 + 50 × Storage capacity, 1000000} min{1800 + 50 × Storage capacity, 100000} min{1800 + 50 × Storage capacity, 50000} min{1800 + 30 × Storage capacity, 25000}

Throughput

RDS instances equipped with standard SSDs or ESSDs are deployed on the sixth-generation ECS instances. In this situation, the maximum throughput of an RDS instance equipped with standard SSDs or ESSDs varies based on the ECS instance type. For more information, see Storage I/O performance of the new generation of enterprise-level instance families.

Note If the IOPS of an RDS instance equipped with standard SSDs or ESSDs reaches the upper limit, the throughput of the RDS instance also decreases.

ApsaraDB RDS for MySQL instances in Basic Edition (with standard SSDs or ESSDs)

RDS edition Instance family Instance type CPU and memory Maximum connections Storage
Maximum IOPS Storage capacity
Basic Edition General-purpose instance mysql.n1.micro.1 1 core, 1 GB 2,000 See IOPS. Standard SSD: 20 GB to 6,000 GB

ESSD: 20 GB to 6,000 GB

mysql.n2.small.1 1 core, 2 GB 2,000
mysql.n2.medium.1 2 cores, 4 GB 4,000
mysql.n4.medium.1 2 cores, 8 GB 6,000
mysql.n4.large.1 4 cores, 16 GB 8,000
mysql.n4.xlarge.1 8 cores, 32 GB 10,000

ApsaraDB RDS for MySQL instances in High-availability Edition (with standard SSDs or ESSDs)

RDS edition Instance family Instance type CPU and memory Maximum connections Storage
Maximum IOPS Storage capacity
High-availability Edition General-purpose instance mysql.n2.small.2c 1 core, 2 GB 2,000 See IOPS.

ESSD: 20 GB to 32,000 GB

Standard SSD: 20 GB to 6,000 GB

mysql.n2.medium.2c 2 cores, 4 GB 4,000
Dedicated instance mysql.x2.medium.2c 2 cores, 4 GB 4,000
mysql.x2.large.2c 4 cores, 8 GB 6,000
mysql.x2.xlarge.2c 8 cores, 16 GB 8,000
mysql.x2.3large.2c 12 cores, 24 GB 12,000
mysql.x2.2xlarge.2c 16 cores, 32 GB 16,000
mysql.x2.3xlarge.2c 24 cores, 48 GB 24,000
mysql.x2.4xlarge.2c 32 cores, 64 GB 32,000
mysql.x2.13large.2c 52 cores, 96 GB 52,000
mysql.x2.8xlarge.2c 64 cores, 128 GB 64,000
mysql.x2.13xlarge.2c 104 cores, 192 GB 100,000
mysql.x4.medium.2c 2 cores, 8 GB 6,000
mysql.x4.large.2c 4 cores, 16 GB 8,000
mysql.x4.xlarge.2c 8 cores, 32 GB 10,000
mysql.x4.3large.2c 12 cores, 48 GB 15,000
mysql.x4.2xlarge.2c 16 cores, 64 GB 20,000
mysql.x4.3xlarge.2c 24 cores, 96 GB 30,000
mysql.x4.4xlarge.2c 32 cores, 128 GB 40,000
mysql.x4.13large.2c 52 cores, 192 GB 65,000
mysql.x4.8xlarge.2c 64 cores, 256 GB 80,000
mysql.x4.13xlarge.2c 104 cores, 384 GB 100,000
mysql.x8.medium.2c 2 cores, 16 GB 8,000
mysql.x8.large.2c 4 cores, 32 GB 12,000
mysql.x8.xlarge.2c 8 cores, 64 GB 16,000
mysql.x8.3large.2c 12 cores, 96 GB 24,000
mysql.x8.2xlarge.2c 16 cores, 128 GB 32,000
mysql.x8.3xlarge.2c 24 cores, 192 GB 48,000
mysql.x8.4xlarge.2c 32 cores, 256 GB 64,000
mysql.x8.13large.2c 52 cores, 384 GB 100,000
mysql.x8.8xlarge.2c 64 cores, 512 GB 100,000
mysql.x8.13xlarge.2c 104 cores, 768 GB 100,000

ApsaraDB RDS for MySQL instances in High-availability Edition (with local SSDs)

RDS edition Instance family Instance type CPU and memory Maximum connections Storage
Maximum IOPS Storage capacity
High-availability Edition General-purpose instance rds.mysql.t1.small 1 core, 1 GB 300 600 5 GB to 2,000 GB
rds.mysql.s1.small 1 core, 2 GB 600 1,000
rds.mysql.s2.large 2 cores, 4 GB 1,200 2,000
rds.mysql.s2.xlarge 2 cores, 8 GB 2,000 4,000
rds.mysql.s3.large 4 cores, 8 GB 2,000 5,000
rds.mysql.m1.medium 4 cores, 16 GB 4,000 7,000
rds.mysql.c1.large 8 cores, 16 GB 4,000 8,000
rds.mysql.c1.xlarge 8 cores, 32 GB 8,000 12,000
rds.mysql.c2.xlarge 16 cores, 64 GB 16,000 14,000 5 GB to 3,000 GB
rds.mysql.c2.xlp2 16 cores, 96 GB 24,000 16,000
rds.mysql.c2.2xlarge 16 cores, 128 GB 32,000 16,000
Dedicated instance mysql.x4.large.2 4 cores, 16 GB 2,500 4,500 50 GB to 2,000 GB
mysql.x4.xlarge.2 8 cores, 32 GB 5,000 9,000 500 GB to 3,000 GB
mysql.x4.2xlarge.2 16 cores, 64 GB 10,000 18,000 500 GB to 3,000 GB
mysql.x4.4xlarge.2 32 cores, 128 GB 20,000 36,000 1,000 GB to 6,000 GB
mysql.x8.medium.2 2 cores, 16 GB 2,500 4,500 50 GB to 1,000 GB
mysql.x8.large.2 4 cores, 32 GB 5,000 9,000 50 GB to 1,000 GB
mysql.x8.xlarge.2 8 cores, 64 GB 10,000 18,000 500 GB to 3,000 GB
mysql.x8.2xlarge.2 16 cores, 128 GB 20,000 36,000 500 GB to 3,000 GB
mysql.x8.4xlarge.2 32 cores, 256 GB 40,000 72,000 1,000 GB to 6,000 GB
mysql.x8.8xlarge.2 64 cores, 512 GB 80,000 144,000 1,000 GB to 6,000 GB
Dedicated host rds.mysql.st.h43 60 cores, 470 GB 100,000 120,000 3,000 GB or 6,000 GB
rds.mysql.st.v52 90 cores, 720 GB 100,000 140,000 1,000 GB to 6,000 GB

ApsaraDB RDS for MySQL instances in Enterprise Edition (with local SSDs)

RDS edition Instance family Instance type CPU and memory Maximum connections Storage
Maximum IOPS Storage capacity
Enterprise Edition General-purpose instance MySQL 5.7 or 8.0: mysql.n2.small.25 1 core, 2 GB 600 1,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n2.medium.25 2 cores, 4 GB 1,200 2,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n4.medium.25 2 cores, 8 GB 2,000 4,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n2.large.25 4 cores, 8 GB 2,000 5,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n4.large.25 4 cores, 16 GB 4,000 7,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n2.xlarge.25 8 cores, 16 GB 4,000 8,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n4.xlarge.25 8 cores, 32 GB 8,000 12,000 5 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.n4.2xlarge.25 16 cores, 64 GB 16,000 14,000 5 GB to 3,000 GB
MySQL 5.7 or 8.0: mysql.n8.2xlarge.25 16 cores, 128 GB 32,000 16,000 5 GB to 3,000 GB
Dedicated instance (with a large number of CPU cores) MySQL 5.7 or 8.0: mysql.x4.large.25 4 cores, 16 GB 2,500 4,500 50 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.x4.xlarge.25 8 cores, 32 GB 5,000 9,000 500 GB to 3,000 GB
MySQL 5.7 or 8.0: mysql.x4.2xlarge.25 16 cores, 64 GB 10,000 18,000 500 GB to 3,000 GB
MySQL 5.7 or 8.0: mysql.x4.4xlarge.25 32 cores, 128 GB 20,000 36,000 1,000 GB to 6,000 GB
Dedicated instance (with a large memory capacity) MySQL 5.7 or 8.0: mysql.x8.medium.25 2 cores, 16 GB 2,500 4,500 50 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.x8.large.25 4 cores, 32 GB 5,000 9,000 50 GB to 2,000 GB
MySQL 5.7 or 8.0: mysql.x8.xlarge.25 8 cores, 64 GB 10,000 18,000 500 GB to 3,000 GB
MySQL 5.7 or 8.0: mysql.x8.2xlarge.25 16 cores, 128 GB 20,000 36,000 500 GB to 3,000 GB
MySQL 5.7 or 8.0: mysql.x8.4xlarge.25 32 cores, 256 GB 40,000 72,000 1,000 GB to 6,000 GB
Dedicated host MySQL 5.7 or 8.0: mysql.st.8xlarge.25 60 cores, 470 GB 100,000 120,000 3,000 GB, 4,000 GB, 5,000 GB, or 6,000 GB
MySQL 5.7 or 8.0: mysql.st.12xlarge.25 90 cores, 720 GB 100,000 140,000 1,000 GB to 6,000 GB

Primary ApsaraDB RDS for SQL Server instances

RDS edition SQL Server version Instance family Instance type CPU and memory Maximum connections Maximum IOPS Storage capacity
Basic Edition 2012 EE General-purpose instance rds.mssql.s2.large 2 cores, 4 GB Unlimited See IOPS. 20 GB to 3,000 GB
rds.mssql.s2.xlarge 2 cores, 8 GB
rds.mssql.s3.large 4 cores, 8 GB
rds.mssql.m1.medium 4 cores, 16 GB
rds.mssql.c1.large 8 cores, 16 GB
rds.mssql.c1.xlarge 8 cores, 32 GB
rds.mssql.c2.xlarge 16 cores, 64 GB
2012 Web and 2016 Web Dedicated instance mssql.x2.medium.w1 2 cores, 4 GB Unlimited See IOPS. 20 GB to 3,000 GB
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 General-purpose instance rds.mssql.s2.large 2 cores, 4 GB 1,200 2,000 10 GB to 2,000 GB
rds.mssql.s2.xlarge 2 cores, 8 GB 2,000 4,000
rds.mssql.s3.large 4 cores, 8 GB 2,000 5,000
rds.mssql.m1.medium 4 cores, 16 GB 4,000 7,000
rds.mssql.c1.large 8 cores, 16 GB 4,000 8,000
rds.mssql.c1.xlarge 8 cores, 32 GB 8,000 12,000
rds.mssql.c2.xlarge 16 cores, 64 GB 16,000 14,000
Dedicated instance mssql.x8.medium.2 2 cores, 16 GB 2,500 4,500 250 GB
mssql.x8.large.2 4 cores, 32 GB 5,000 9,000 500 GB
mssql.x8.xlarge.2 8 cores, 64 GB 10,000 18,000 1,000 GB
mssql.x8.2xlarge.2 16 cores, 128 GB 20,000 36,000 2,000 GB
Dedicated host rds.mssql.st.d13 30 cores, 220 GB 64,000 20,000 2,000 GB
rds.mssql.st.h43 60 cores, 470 GB 100,000 50,000 2,000 GB
2008 R2 with SSD, 2012 EE and 2016 EE Dedicated instance mssql.x4.medium.e2 2 cores, 8 GB Unlimited See IOPS. 20 GB to 4,000 GB
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 SE, 2016 SE, 2017 SE and 2019 SE General-purpose instance mssql.s2.medium.s2 2 cores, 4 GB
mssql.s2.large.s2 4 cores, 8 GB
mssql.s2.xlarge.s2 8 cores, 16 GB
mssql.s2.2xlarge.s2 16 cores, 32 GB
mssql.s4.2xlarge.s2 16 cores, 64 GB
mssql.s8.2xlarge.s2 16 cores, 128 GB
Dedicated instance mssql.x4.medium.s2 2 cores, 8 GB
mssql.x8.medium.s2 2 cores, 16 GB
mssql.x4.large.s2 4 cores, 16 GB
mssql.x8.large.s2 4 cores, 32 GB
mssql.x4.xlarge.s2 8 cores, 32 GB
mssql.x8.xlarge.s2 8 cores, 64 GB
mssql.x4.2xlarge.s2 16 cores, 64 GB
mssql.x8.2xlarge.s2 16 cores, 128 GB
mssql.x4.3xlarge.s2 24 cores, 96 GB
Cluster Edition 2017 EE Dedicated instance mssql.x4.medium.e2 2 cores, 8 GB Unlimited See IOPS. 20 GB to 4,000 GB
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

Primary ApsaraDB RDS for PostgreSQL instances (with local SSDs)

RDS edition PostgreSQL version Instance family Instance type CPU and memory specifications Maximum number of connections Maximum IOPS Storage capacity
High-availability Edition

9.4 and 10

General-purpose instance rds.pg.s1.small 1 CPU core, 2 GB 200 1,000 20 GB to 6,000 GB
rds.pg.s2.large 2 CPU cores, 4 GB 400 2,000
rds.pg.s3.large 4 CPU cores, 8 GB 800 5,000
rds.pg.c1.large 8 CPU cores, 16 GB 1,500 8,000
rds.pg.c1.xlarge 8 CPU cores, 32 GB 2,000 12,000
rds.pg.c2.xlarge 16 CPU cores, 64 GB 3,000 16,000
Dedicated instance (with a large memory capacity) pg.x8.medium.2 2 CPU cores, 16 GB 2,500 4,500
pg.x8.large.2 4 CPU cores, 32 GB 5,000 9,000
pg.x8.xlarge.2 8 CPU cores, 64 GB 10,000 18,000
pg.x8.2xlarge.2 16 CPU cores, 128 GB 12,000 36,000
Dedicated host instance rds.pg.st.h43 60 CPU cores, 470 GB 12,000 450,000

Primary ApsaraDB RDS for PostgreSQL instances (with standard or enhanced SSDs)

RDS edition PostgreSQL version Instance family Instance type CPU and memory specifications Maximum number of connections Maximum IOPS Storage capacity
Basic Edition 10, 11, and 12 General-purpose instance pg.n2.small.1 1 CPU core, 2 GB 200 For more information, see the "IOPS" section in Primary instance types.

Standard SSD: 20 GB to 6,000 GB

Enhanced SSD: 50 GB to 32,000 GB

pg.n2.medium.1 2 CPU cores, 4 GB 400
pg.n4.medium.1 2 CPU cores, 8 GB 800
pg.n2.large.1 4 CPU cores, 8 GB 800
pg.n4.large.1 4 CPU cores, 16 GB 1,600
pg.n2.xlarge.1 8 CPU cores, 16 GB 1,600
pg.n4.xlarge.1 8 CPU cores, 32 GB 3,200
pg.n2.2xlarge.1 16 CPU cores, 32 GB 3,200
pg.n4.2xlarge.1 16 CPU cores, 64 GB 6,400
pg.n8.2xlarge.1 16 CPU cores, 128 GB 10,000
pg.n4.4xlarge.1 32 CPU cores, 128 GB 12,800
pg.n8.4xlarge.1 32 CPU cores, 256 GB 20,000
pg.n4.8xlarge.1 56 CPU cores, 224 GB 22,000
pg.n8.8xlarge.1 56 CPU cores, 480 GB 48,000
High-availability Edition

10, 11, and 12

General-purpose instance pg.n2.small.2c 1 CPU core, 2 GB 200 For more information, see the "IOPS" section in Primary instance types.

Standard SSD: 20 GB to 6,000 GB

Fully encrypted standard SSD: 50 GB to 6,000GB

Enhanced SSD: 50 GB to 32,000 GB

Enhanced SSD of PL2: 500 GB to 32,000 GB

Enhanced SSD of PL3: 1,500 GB to 32,000 GB

pg.n2.medium.2c 2 CPU core, 4 GB 400
Dedicated instance pg.x2.medium.2c 2 CPU cores, 4 GB 400
pg.x4.medium.2c 2 CPU cores, 8 GB 800
pg.x8.medium.2c 2 CPU cores, 16 GB 1,600
pg.x2.large.2c 4 CPU cores, 8 GB 800
pg.x4.large.2c 4 CPU cores, 16 GB 1,600
pg.x8.large.2c 4 CPU cores, 32 GB 3,200
pg.x2.xlarge.2c 8 CPU cores, 16 GB 1,600
pg.x4.xlarge.2c 8 CPU cores, 32 GB 3,200
pg.x8.xlarge.2c 8 CPU cores, 64 GB 6,400
pg.x2.3large.2c 12 CPU cores, 24 GB 2,400
pg.x4.3large.2c 12 CPU cores, 48 GB 4,800
pg.x8.3large.2c 12 CPU cores, 96 GB 9,600
pg.x2.2xlarge.2c 16 CPU cores, 32 GB 3,200
pg.x4.2xlarge.2c 16 CPU cores, 64 GB 6,400
pg.x8.2xlarge.2c 16 CPU cores, 128 GB 12,800
pg.x2.3xlarge2c 24 CPU cores, 48 GB 4,800
pg.x4.3xlarge.2c 24 CPU cores, 96 GB 9,600
pg.x8.3xlarge.2c 24 CPU cores, 192 GB 19,200
pg.x2.4xlarge.2c 32 CPU cores, 64 GB 6,400
pg.x4.4xlarge.2c 32 CPU cores, 128 GB 12,800
pg.x8.4xlarge.2c 32 CPU cores, 256 GB 25,600
pg.x2.13large.2c 52 CPU cores, 104 GB 10,400
pg.x4.13large.2c 52 CPU cores, 192 GB 19,200
pg.x8.13large.2c 52 CPU cores, 384 GB 38,400
pg.x2.8xlarge.2c 64 CPU cores, 128 GB 12,800
pg.x4.8xlarge.2c 64 CPU cores, 256 GB 25,600
pg.x8.8xlarge.2c 64 CPU cores, 512 GB 51,200
pg.x2.13xlarge.2c 104 CPU cores, 192 GB 19,200
pg.x4.13xlarge.2c 104 CPU cores, 384 GB 38,400
pg.x8.13xlarge.2c 104 CPU cores, 768 GB 76,800

ApsaraDB RDS for PPAS instances

RDS edition PPAS version Instance family Instance type CPU and memory Maximum connections Maximum IOPS Storage capacity
High-availability Edition

10

General-purpose instance rds.ppas.t1.small 1 core, 1 GB 100 1,200 150 GB
Dedicated instance ppas.x4.small.2 1 core, 4 GB 200 5,000 250 GB
ppas.x4.medium.2 2 cores, 8 GB 400 10,000
ppas.x8.medium.2 2 cores, 16 GB 2,500 15,000
ppas.x4.large.2 4 cores, 16 GB 2,500 20,000 250 GB or 500 GB
ppas.x8.large.2 4 cores, 32 GB 5,000 30,000
ppas.x4.xlarge.2 8 cores, 32 GB 5,000 40,000 500 GB or 1,000 GB
ppas.x8.xlarge.2 8 cores, 64 GB 10,000 60,000
ppas.x4.2xlarge.2 16 cores, 64 GB 10,000 80,000 1,000 GB or 2,000 GB
ppas.x8.2xlarge.2 16 cores, 128 GB 12,000 120,000
ppas.x4.4xlarge.2 32 cores, 128 GB 12,000 160,000 2,000 GB or 3,000 GB
ppas.x8.4xlarge.2 32 cores, 256 GB 12,000 240,000
Dedicated host rds.ppas.st.h43 60 cores, 470 GB 12,000 450,000 3,000 GB, 4,000 GB, 5,000 GB, or 6,000 GB

ApsaraDB RDS for MariaDB TX instances

RDS edition Instance family Instance type CPU and memory Maximum connections Storage
Maximum IOPS Storage capacity
High-availability Edition General-purpose instance mariadb.n2.small.2c 1 core, 2 GB 2,000 See IOPS. 20 GB to 1,000 GB
mariadb.n2.medium.2c 2 cores, 4 GB 4,000
Dedicated instance mariadb.x2.large.2c 4 cores, 8 GB 6,000 20 GB to 6,000 GB
mariadb.x4.large.2c 4 cores, 16 GB 8,000
mariadb.x2.xlarge.2c 8 cores, 16 GB 8,000
mariadb.x4.xlarge.2c 8 cores, 32 GB 10,000
mariadb.x2.2xlarge.2c 16 cores, 32 GB 10,000
mariadb.x4.2xlarge.2c 16 cores, 64 GB 15,000
mariadb.x8.2xlarge.2c 16 cores, 128 GB 20,000
mariadb.x4.4xlarge.2c 32 cores, 128 GB 20,000
mariadb.x8.4xlarge.2c 32 cores, 256 GB 64,000
Dedicated host mariadb.x4.8xlarge.2c 56 cores, 224 GB 64,000
mariadb.x8.8xlarge.2c 56 cores, 480 GB 100,000

Phased-out ApsaraDB RDS for MySQL instance types

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

Instance type CPU cores Memory capacity Maximum connections Maximum IOPS
rds.mys2.small 2 240 MB 60 150
rds.mys2.mid 4 600 MB 150 300
rds.mys2.standard 6 1,200 MB 300 600
rds.mys2.large 8 2,400 MB 600 1,200
rds.mys2.xlarge 9 6,000 MB 1,500 3,000
rds.mys2.2xlarge 10 12,000 MB 2,000 6,000
rds.mys2.4xlarge 11 24,000 MB 2,000 12,000
rds.mys2.8xlarge 13 48,000 MB 2,000 14,000
rds.mysql.st.d13 30 220 GB 64,000 20,000
mysql.x8.medium.3 2 16 GB 2,500 4,500
mysql.x4.large.3 4 16 GB 2,500 4,500
mysql.x8.large.3 4 32 GB 5,000 9,000
mysql.x4.xlarge.3 8 32 GB 5,000 9,000
mysql.x8.xlarge.3 8 64 GB 10,000 18,000
mysql.x4.2xlarge.3 16 64 GB 10,000 18,000
mysql.x8.2xlarge.3 16 128 GB 20,000 36,000
mysql.x4.4xlarge.3 32 128 GB 20,000 36,000
mysql.x8.4xlarge.3 32 256 GB 40,000 72,000
mysql.st.8xlarge.3 60 470 GB 100,000 120,000
mysql.n2.2xlarge.1 16 32 GB 10,000 See IOPS.
mysql.n4.2xlarge.1 16 64 GB 15,000
mysql.n8.2xlarge.1 16 128 GB 20,000
mysql.x2.3xlarge2c 24 48 GB 24,000
mysql.n4.4xlarge.1 32 128 GB 20,000
mysql.n8.4xlarge.1 32 256 GB 64,000
mysql.n4.8xlarge.1 56 224 GB 64,000
mysql.n8.8xlarge.1 56 480 GB 64,000

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 IOPS.

Phased-out instance types of ApsaraDB RDS for PostgreSQL

The following table describes the phased-out instance types of ApsaraDB RDS for PostgreSQL. These instance types are no longer available to new instances.

Instance type CPU cores Memory capacity Maximum connections Maximum IOPS
rds.pg.t1.small 1 1GB 100 600
pg.x8.4xlarge.2 32 256GB 20000 50000
pg.n1.micro.1 1 1GB 100 See IOPS.
pg.gn5i-c2g1.large.1 2 8 GB 800
pg.gn5i-c4g1.xlarge.1 4 16 GB 1,600
pg.gn5i-c8g1.2xlarge.1 8 32 GB 3,200
pg.gn5i-c16g1.4xlarge.1 16 64 GB 6,400
pg.gn5i-c16g1.8xlarge.1 32 128 GB 12,800
pg.gn5i-c28g1.14xlarge.1 56 224 GB 22,000

Phased-out ApsaraDB RDS for PPAS instance types

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

Instance type CPU cores Memory capacity Maximum connections Maximum IOPS
rds.ppas.s1.small 1 2 GB 200 1,000
rds.ppas.s2.large 2 4 GB 400 2,000
rds.ppas.s3.large 4 8 GB 800 5,000
rds.ppas.m1.medium 4 16 GB 1,500 8,000
rds.ppas.c1.xlarge 8 32 GB 2,000 12,000
rds.ppas.c2.xlarge 16 64 GB 2,000 14,000
rds.pg.c2.2xlarge 16 128 GB 3,000 16,000

FAQ

Why does an entry-level RDS instance support a larger maximum number of connections and deliver higher IOPS than an enterprise-level RDS instance when the instances have the same CPU cores and memory capacity?

The entry-level RDS instance belongs to the shared or general-purpose instance family, whereas the enterprise-level RDS instance belongs to the dedicated instance family. The shared and general-purpose instance families reuse CPU resources. This allows the entry-level RDS instance to support a larger maximum number of connections and deliver higher IOPS. However, the dedicated instance family uses exclusive CPU and memory resources. This allows the enterprise-level RDS instance to run more stably. For more information, see Overview.