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    :RDS Custom instance types

    Last Updated:May 20, 2025

    This topic provides an overview of RDS Custom instance types. The overview includes information about all instance types and their specifications.

    Instance types

    Before you can understand the RDS Custom instance types, you must understand Elastic Compute Service (ECS) instance families. For more information, see Overview of instance families.

    Instance families

    Product type

    Category

    Instance family

    ECS instance family

    Standard

    Premium Local SSD

    Local SSD type i2

    • Local SSD type i2

    • Local SSD type i2g

    Local SSD type i2ne

    • Local SSD type i2ne

    • Local SSD type i2gne

    Local SSD type i3

    • Local SSD type i3

    • Local SSD type i3g

    Local SSD type i4

    • Local SSD type i4

    • Local SSD type i4g

    Cloud disk

    Storage-enhanced type se7

    Storage-enhanced memory-optimized type r7se

    Instance family with high clock speeds hf7

    Memory-optimized type with high clock speeds hfr7

    AMD cloud disk type xa7

    Seventh-generation AMD instance family

    AMD cloud disk type xa8

    Eighth-generation AMD instance family

    Intel cloud disk type x6

    Sixth-generation Intel instance family

    Intel cloud disk type x7

    Seventh-generation Intel instance family

    Intel cloud disk type x8

    Eighth-generation Intel instance family

    YiTian

    Cloud disk

    ARM cloud disk type xm8

    Eighth-generation ARM instance family

    Naming conventions for instance types

    image

    Instance type element

    Configuration

    Example for instance types with cloud disks

    Example for instance types with Premium Local SSDs

    Database Engine

    The database engine.

    mysql

    mysql

    Host Instance Family

    • Host instance family

      • i: instance families with local SSDs (i series)

      • i?ne: instance families with local SSDs (i?ne series)

      • x: instance families with cloud disks (Intel series)

      • xa: instance families with cloud disks (AMD series)

      • xm: instance families with cloud disks (ARM series)

      • xse: storage-enhanced instance families

      • hf: instance families with high clock speeds

    • CPU-to-memory ratio (number in a host instance family)

      • 2: CPU-to-memory ratio of 1:2

      • 4: CPU-to-memory ratio of 1:4

      • 8: CPU-to-memory ratio of 1:8

    x8

    i8ne

    CPU Cores

    • small: 1 core

    • medium: 2 cores

    • large: 4 cores

    • xlarge: 8 cores

    • 3large: 12 cores

    • 2xlarge: 16 cores

    • 3xlarge: 24 cores

    • 4xlarge: 32 cores

    • 6xlarge: 48 cores

    • 13large: 52 cores

    • 8xlarge: 64 cores

    • 10xlarge: 80 cores

    • 12xlarge: 96 cores

    • 13xlarge: 104 cores

    • 16xlarge: 128 cores

    • 24xlarge: 192 cores

    xlarge

    large

    Suffix

    • Number: the generation to which each instance family of the same type belongs A larger number indicates a newer generation of instance families that are more cost-effective and deliver higher performance.

    • cm: the abbreviation for custom, which indicates an RDS Custom instance type

    8cm

    2cm

    Standard

    Instance types for instances with cloud disks

    Instance family

    Instance type

    Number of CPU cores and memory capacity

    Processor

    ECS instance type

    Intel cloud disk type x6

    mysql.x2.xlarge.6cm

    8 cores, 16 GiB

    Intel

    ecs.c6.2xlarge

    mysql.x4.xlarge.6cm

    8 cores, 32 GiB

    Intel

    ecs.g6.2xlarge

    mysql.x8.xlarge.6cm

    8 cores, 64 GiB

    Intel

    ecs.r6.2xlarge

    mysql.x8.3xlarge.6cm

    24 cores, 192 GiB

    Intel

    ecs.r6.6xlarge

    Intel cloud disk type x7

    mysql.x4.large.7cm

    4 cores, 16 GiB

    Intel

    ecs.g7.xlarge

    mysql.x2.xlarge.7cm

    8 cores, 16 GiB

    Intel

    ecs.c7.2xlarge

    mysql.x4.xlarge.7cm

    8 cores, 32 GiB

    Intel

    ecs.g7.2xlarge

    mysql.x8.xlarge.7cm

    8 cores, 64 GiB

    Intel

    ecs.r7.2xlarge

    mysql.x4.2xlarge.7cm

    16 cores, 64 GiB

    Intel

    ecs.g7.4xlarge

    mysql.x8.2xlarge.7cm

    16 cores, 128 GiB

    Intel

    ecs.r7.4xlarge

    mysql.x4.4xlarge.7cm

    32 cores, 128 GiB

    Intel

    ecs.g7.8xlarge

    mysql.x8.4xlarge.7cm

    32 cores, 256 GiB

    Intel

    ecs.r7.8xlarge

    mysql.x4.8xlarge.7cm

    64 cores, 256 GiB

    Intel

    ecs.g7.16xlarge

    mysql.x4.16xlarge.7cm

    128 cores, 512 GiB

    Intel

    ecs.g7.32xlarge

    Intel cloud disk type x8

    mysql.x4.large.8cm

    4 cores, 16 GiB

    Intel

    ecs.g8i.xlarge

    mysql.x8.large.8cm

    4 cores, 32 GiB

    Intel

    ecs.r8i.xlarge

    mysql.x2.xlarge.8cm

    8 cores, 16 GiB

    Intel

    ecs.c8i.2xlarge

    mysql.x4.xlarge.8cm

    8 cores, 32 GiB

    Intel

    ecs.g8i.2xlarge

    mysql.x8.xlarge.8cm

    8 cores, 64 GiB

    Intel

    ecs.r8i.2xlarge

    mysql.x8.3large.8cm

    12 cores, 96 GiB

    Intel

    ecs.r8i.3xlarge

    mysql.x2.2xlarge.8cm

    16 cores, 32 GiB

    Intel

    ecs.c8i.4xlarge

    mysql.x4.2xlarge.8cm

    16 cores, 64 GiB

    Intel

    ecs.g8i.4xlarge

    mysql.x8.2xlarge.8cm

    16 cores, 128 GiB

    Intel

    ecs.r8i.4xlarge

    mysql.x4.4xlarge.8cm

    32 cores, 128 GiB

    Intel

    ecs.g8i.8xlarge

    mysql.x8.4xlarge.8cm

    32 cores, 256 GiB

    Intel

    ecs.r8i.8xlarge

    mysql.x8.6xlarge.8cm

    48 cores, 384 GiB

    Intel

    ecs.r8i.12xlarge

    Storage-enhanced type se7

    mysql.xse8.3xlarge.7cm

    24 cores, 192 GiB

    Intel

    ecs.r7se.6xlarge

    Instance family with high clock speeds hf7

    mysql.hf8.2xlarge.7cm

    16 cores, 128 GiB

    Intel

    ecs.hfr7.4xlarge

    AMD cloud disk type xa7

    mysql.xa2.xlarge.7cm

    8 cores, 16 GiB

    AMD

    ecs.c7a.2xlarge

    mysql.xa4.xlarge.7cm

    8 cores, 32 GiB

    AMD

    ecs.g7a.2xlarge

    mysql.xa8.xlarge.7cm

    8 cores, 64 GiB

    AMD

    ecs.r7a.2xlarge

    AMD cloud disk type xa8

    mysql.xa8.large.8cm

    4 cores, 32 GiB

    AMD

    ecs.r8a.xlarge

    mysql.xa2.xlarge.8cm

    8 cores, 16 GiB

    AMD

    ecs.c8a.2xlarge

    mysql.xa4.xlarge.8cm

    8 cores, 32 GiB

    AMD

    ecs.g8a.2xlarge

    mysql.xa8.xlarge.8cm

    8 cores, 64 GiB

    AMD

    ecs.r8a.2xlarge

    mysql.xa8.2xlarge.8cm

    16 cores, 128 GiB

    AMD

    ecs.r8a.4xlarge

    mysql.xa4.4xlarge.8cm

    32 cores, 128 GiB

    AMD

    ecs.g8a.8xlarge

    mysql.xa8.4xlarge.8cm

    32 cores, 256 GiB

    AMD

    cs.r8a.8xlarge

    mysql.xa4.6xlarge.8cm

    48 cores, 192 GiB

    AMD

    ecs.g8a.12xlarge

    mysql.xa8.6xlarge.8cm

    48 cores, 384 GiB

    AMD

    ecs.r8a.12xlarge

    mysql.xa4.8xlarge.8cm

    64 cores, 256 GiB

    AMD

    ecs.g8a.16xlarge

    mysql.xa8.8xlarge.8cm

    64 cores, 512 GiB

    AMD

    ecs.r8a.16xlarge

    mysql.xa4.12xlarge.8cm

    96 cores, 384 GiB

    AMD

    ecs.g8a.24xlarge

    mysql.xa8.12xlarge.8cm

    96 cores, 768 GiB

    AMD

    ecs.r8a.24xlarge

    mysql.xa4.16xlarge.8cm

    128 cores, 512 GiB

    AMD

    ecs.g8a.32xlarge

    mysql.xa8.16xlarge.8cm

    128 cores, 1,024 GiB

    AMD

    ecs.r8a.32xlarge

    Instance types for instances with Premium Local SSDs

    Instance family

    Instance type

    Number of CPU cores and memory capacity

    Processor

    Local storage

    ECS instance type

    Local SSD type i2

    mysql.i8.large.2cm

    4 cores, 32 GiB

    Intel

    1 × 894 GiB

    ecs.i2.xlarge

    mysql.i4.xlarge.2cm

    8 cores, 32 GiB

    Intel

    1 × 894 GiB

    ecs.i2g.2xlarge

    mysql.i8.xlarge.2cm

    8 cores, 64 GiB

    Intel

    1 × 1,788 GiB

    ecs.i2.2xlarge

    mysql.i4.2xlarge.2cm

    16 cores, 64 GiB

    Intel

    1 × 1,788 GiB

    ecs.i2g.4xlarge

    Local SSD type i2ne

    mysql.i8ne.large.2cm

    4 cores, 32 GiB

    Intel

    1 × 894 GiB

    ecs.i2ne.xlarge

    mysql.i4ne.xlarge.2cm

    8 cores, 32 GiB

    Intel

    1 × 894 GiB

    ecs.i2g.2xlarge

    mysql.i8ne.xlarge.2cm

    8 cores, 64 GiB

    Intel

    1 × 1,788 GiB

    ecs.i2ne.2xlarge

    mysql.i8ne.4xlarge.2cm

    32 cores, 256 GiB

    Intel

    4 × 1,788 GiB

    ecs.i2ne.8xlarge

    Local SSD type i3

    mysql.i8.large.3cm

    4 cores, 32 GiB

    Intel

    1 × 894 GiB

    ecs.i3.xlarge

    mysql.i4.xlarge.3cm

    8 cores, 32 GiB

    Intel

    1 × 447 GiB

    ecs.i3g.2xlarge

    mysql.i8.xlarge.3cm

    8 cores, 64 GiB

    Intel

    1 × 1,788 GiB

    ecs.i3.2xlarge

    mysql.i8.2xlarge.3cm

    16 cores, 128 GiB

    Intel

    2 × 1,788 GiB

    ecs.i3.4xlarge

    mysql.i8.4xlarge.3cm

    32 cores, 256 GiB

    Intel

    4 × 1,788 GiB

    ecs.i3.8xlarge

    Local SSD type i4

    mysql.i8.xlarge.4cm

    8 cores, 64 GiB

    Intel

    1 × 1,788 GiB

    ecs.i4.2xlarge

    mysql.i8.2xlarge.4cm

    16 cores, 128 GiB

    Intel

    1 × 3,576 GiB

    ecs.i4.4xlarge

    mysql.i8.4xlarge.4cm

    32 cores, 256 GiB

    Intel

    2 × 3,576 GiB

    ecs.i4.8xlarge

    mysql.i8.8xlarge.4cm

    64 cores, 512 GiB

    Intel

    4 × 3,576 GiB

    ecs.i4.16xlarge

    mysql.i8.16xlarge.4cm

    128 cores, 1,024 GiB

    Intel

    8 × 3,576 GiB

    ecs.i4.32xlarge

    YiTian

    Instance family

    Instance type

    Number of CPU cores and memory capacity

    Processor

    ECS instance type

    ARM cloud disk type xm8

    mysql.xm2.xlarge.8cm

    8 cores, 16 GiB

    ARM

    ecs.c8y.2xlarge

    mysql.xm4.xlarge.8cm

    8 cores, 32 GiB

    ARM

    ecs.g8y.2xlarge

    mysql.xm8.xlarge.8cm

    8 cores, 64 GiB

    ARM

    ecs.r8y.2xlarge

    mysql.xm16.xlarge.8cm

    8 cores, 128 GiB

    ARM

    ecs.r8y.4xlarge

    Related operations

    Operation

    Description

    DescribeRCInstanceTypes

    Queries instance types.

    DescribeRCInstanceTypeFamilies

    Queries instance families.