ECS Instance Type Families

Instance family



An Elastic Compute Service (ECS) instance is a virtual server and the smallest computing service unit in the cloud. An instance type essentially determines the hardware of the host computer used for your instance. Each instance type offers different compute and memory capabilities. This topic describes all ECS instance families available for sale and introduces their features, specifications, and use scenarios.

ECS provides a variety of instance families for different use scenarios or application workloads. Each instance family offers multiple instance types based on their CPU and memory specifications. ECS instance type defines the basic properties of an ECS instance, including CPU (CPU model and clock speed) and memory. In addition to the instance type, you must also configure the Elastic Block Storage (EBS) devices, image, and network type when you create an ECS instance.
Note The available instance families and types vary based on regions. You can go to the ECS Instance Types Available for Each Region page to view the available instance types in each region.
Enterprise applications require high business stability. Alibaba Cloud ECS instance families are categorized into enterprise-level and shared instance families based on whether the instance families are suitable for enterprise scenarios. Enterprise-level instance families offer consistent performance and dedicated resources. In enterprise-level instance families, each vCPU corresponds to a hyperthread of an Intel® Xeon® core. For more information about the differences between enterprise-level and shared instance families, see Instance FAQ.

You can upgrade or downgrade instance types within the same instance family or across different instance families. For more information, see Instance families that support instance type changes.

For information about how to choose instance families based on scenarios, see Best practices for instance type selection.

Alibaba Cloud ECS instance families are categorized into the following categories based on their system architecture and use scenarios.

General-purpose instance families



g8m, general-purpose instance family
This instance family is in invitational preview. To use this instance family, go to the g8m Instance Free Trial Application Form page to submit an application.

The g8m general-purpose instance family is the first Alibaba Cloud instance family that uses the proprietary Yitian 710 CPU. This instance family is used for general-purpose computing, cloud native, and Android in Cloud scenarios.

Features:
This instance family uses the third-generation SHENLONG architecture to provide predictable and consistent ultra-high performance. This instance family utilizes the fast path acceleration feature of chips to improve storage performance, network performance, and computing stability by an order of magnitude.
Compute:
Offers a CPU-to-memory ratio of 1:4.
Uses 2.75 GHz Yitian 710 processors to provide consistent computing performance.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports enhanced SSDs (ESSDs).
Provides high storage I/O performance based on large computing capacity.
Network:
Supports IPv6.
Provides ultra-high packet forwarding rates.
Provides burstable bandwidth capabilities for low-specification instances.
Provides high network performance based on large computing capacity.
Supported scenarios:
Containers and microservices
Scenarios where applications such as DevOps applications are developed and tested
Websites and application servers
Game servers
Other general-purpose enterprise-level applications


g7se, storage-enhanced general-purpose instance family
This instance family is in public preview in the Hangzhou Zone I, Shanghai Zone B, Beijing Zone K, and Shenzhen Zone F.

Features:
This instance family uses the third-generation SHENLONG architecture and Intel Ice Lake processors to improve storage I/O performance.
This instance family delivers a sequential read/write throughput of up to 64 Gbit/s and up to 1,000,000 IOPS per instance.
Compute:
Offers a CPU-to-memory ratio of 1:4.
Uses the third-generation Intel® Xeon® Scalable (Ice Lake) processors that deliver a base frequency of 2.7 GHz and an all-core turbo frequency of 3.5 GHz to provide consistent computing performance.
Allows you to enable or disable Hyper-Threading.
Note By default, Hyper-Threading is enabled on ECS instances. For more information, see Specify and view CPU options.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports only ESSDs and provides ultra-high I/O performance.
Allows a maximum of 64 data disks to be attached to a single instance. You can attach a maximum of 16 data disks to an instance when you create the instance. If the instance requires more data disks, attach more data disks after the instance is created. For more information, see Attach a data disk.
Provides high storage I/O performance based on large computing capacity.
Note For more information about the storage I/O performance of the next-generation enterprise-level instance families, see Storage I/O performance.
Network:
Supports IPv6.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
Supported scenarios:
I/O-intensive scenarios such as large and medium-sized online transactional processing (OLTP) core databases
Large and medium-sized NoSQL databases
Search and real-time log analytics
Traditional large enterprise-level commercial software such as SAP

For more information, please check the official documentation.

Compute-optimized instance families



c7se, storage-enhanced compute-optimized instance family
Features:
This instance family uses the third-generation SHENLONG architecture and Intel Ice Lake processors to improve storage I/O performance.
This instance family delivers a sequential read/write throughput of up to 64 Gbit/s and up to 1,000,000 IOPS per instance.
Compute:
Offers a CPU-to-memory ratio of 1:2.
Uses third-generation Intel® Xeon® Scalable (Ice Lake) processors that deliver a base frequency of 2.7 GHz and an all-core turbo frequency of 3.5 GHz to provide consistent computing performance.
Allows you to enable or disable Hyper-Threading.
Note By default, Hyper-Threading is enabled on ECS instances. For more information, see Specify and view CPU options.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports only enhanced SSDs (ESSDs) and provides ultra-high I/O performance.
Allows a maximum of 64 data disks to be attached to a single instance. When you create an instance, you can attach a maximum of 16 data disks to the instance. If the instance requires more data disks, you can attach more data disks after the instance is created. For more information, see Attach a data disk.
Note During the invitational preview of this instance family, you can attach data disks to instances of this instance family only when you create the instances, and a maximum of 16 data disks can be attached to a single instance.
Provides high storage I/O performance based on large computing capacity.
Note For more information about the storage I/O performance of the next-generation enterprise-level instance families, see Storage I/O performance.
Network:
Supports IPv6.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
Supported scenarios:
I/O-intensive scenarios such as large and medium-sized online transactional processing (OLTP) core databases
Large and medium-sized NoSQL databases
Search and real-time log analytics
Traditional large enterprise-level commercial software such as SAP

For more information, please check the official documentation.

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