Most r and re series memory-optimized instance families offer a CPU-to-memory ratio of 1:8. The r and re series memory-optimized instance families are suitable for in-memory databases, data analytics and mining, distributed in-memory caches such as Redis, big data applications such as Kafka and Elasticsearch, and memory-intensive, general-purpose, and enterprise-level applications such as Java.
Background information
Before you read further in this topic, you must be familiar with the following information:
Classification and naming of instance types. Familiarize yourself with the instance family categories, naming conventions of instance types, and differences between instance families. For more information, see Classification and naming of instance types.
Instance type metrics. For information about the metrics of instance types, see Instance type metrics.
Instructions for selecting instance types based on your business scenarios. For more information, see Instance type selection.
After you determine an instance type for your use case, you may need to learn about the following information:
Regions in which the instance type is available for purchase. Instance types that are available for purchase vary based on the region. You can go to the Instance Types Available for Each Region page to view the instance types available for purchase in each region.
Estimated instance costs. You can calculate the price of instances that uses different billing methods in the Price Calculator.
Instructions for purchasing an instance. You can go to the ECS instance buy page to place a purchase order for instances.
You may be concerned about the following information:
Retired instance families. If you cannot find an instance type in this topic, the instance type may be in a retired instance family. For information about retired instance families, see Retired instance families.
Supported instance type changes. Before you change the instance type of an instance, check whether the instance type can be changed and identify compatible instance types. For more information, see Instance types and families that support instance type changes.
x86 | Arm | Not recommended instance families (If the following instance families are sold out, we recommend that you use the instance families in the preceding columns.) | |
Intel processor-powered instance families | AMD processor-powered instance families | YiTian processor-powered instance families | |
r8a, memory-optimized instance family
Introduction: This instance family uses the innovative Cloud Infrastructure Processing Unit (CIPU) architecture developed by Alibaba Cloud to provide stable computing power, a more robust I/O engine, and chip-level security hardening.
Supported scenarios:
Memory-intensive, general-purpose, enterprise-level applications such as Java
Various in-memory database applications such as Redis and Memcache
Big data applications such as Kafka and Elasticsearch
Audio and video transcoding applications
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.7 GHz AMD EPYCTM Genoa processors that deliver a turbo frequency of up to 3.7 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Is compatible with specific operating systems. For more information, see the Operating system versions that support AMD Genoa processors used by eighth-generation AMD instance types section of the "Compatibility between AMD instance types and operating systems" topic.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports the Non-Volatile Memory Express (NVMe) protocol. For more information, see NVMe protocol.
Supports Enterprise SSDs (ESSDs) and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Offers burstable disk IOPS and burstable disk bandwidth for low-specification instances and provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Supports Elastic RDMA interfaces (ERIs). For information about how to use ERIs, see Configure eRDMA on an enterprise-level instance.
Supports the Jumbo Frames feature. For more information, see Jumbo Frames.
Provides ultra-high packet forwarding rates.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
Security: Supports the virtual Trusted Platform Module (vTPM) feature. For more information, see Overview of trusted computing capabilities.
The r8a instance family includes the following instance types: ecs.r8a.large, ecs.r8a.xlarge, ecs.r8a.2xlarge, ecs.r8a.4xlarge, ecs.r8a.8xlarge, ecs.r8a.12xlarge, ecs.r8a.16xlarge, ecs.r8a.24xlarge, ecs.r8a.32xlarge, and ecs.r8a.48xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
For ecs.r8a.large and ecs.r8a.xlarge instances, you must enable the Jumbo Frames feature before the instances can burst their network bandwidths to 12.5 Gbit/s. For more information, see Jumbo Frames.
To use the ecs.r8a.48xlarge instance type, submit a ticket.
r8i, memory-optimized instance family
Introduction: This instance family uses the innovative CIPU architecture developed by Alibaba Cloud to provide stable computing power, a more robust I/O engine, and chip-level security hardening.
Supported scenarios:
Data analytics and mining
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Distributed in-memory cache, such as Redis
Websites and application servers
Servers of massively multiplayer online (MMO) games
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses Intel® Xeon® Emerald Rapids or Intel® Xeon® Sapphire Rapids processors that deliver a clock speed of at least 2.7 GHz and an all-core turbo frequency of 3.2 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Is compatible with specific operating systems. For more information, see Operating system versions that support AMD Genoa processors used by eighth-generation AMD instance types.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports the NVMe protocol. For more information, see NVMe protocol.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Offers burstable disk IOPS and burstable disk bandwidth for low-specification instances and provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Supports ERIs. For information about how to use ERIs, see Configure eRDMA on an enterprise-level instance.
Supports the Jumbo Frames feature. For more information, see Jumbo Frames.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
Security:
Supports the vTPM feature. For more information, see Overview of trusted computing capabilities.
Supports Intel Total Memory Encryption (TME) to encrypt memory.
The r8i instance family includes the following instance types: ecs.r8i.large, ecs.r8i.xlarge, ecs.r8i.2xlarge, ecs.r8i.3xlarge, ecs.r8i.4xlarge, ecs.r8i.6xlarge, ecs.r8i.8xlarge, ecs.r8i.12xlarge, ecs.r8i.16xlarge, and ecs.r8i.32xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r8ae, enhanced-performance memory-optimized instance family
Introduction: This instance family uses the innovative CIPU architecture developed by Alibaba Cloud to provide stable computing power, a more robust I/O engine, and chip-level security hardening.
Supported scenarios:
AI scenarios, such as deep learning and training, and AI inference
High-performance scientific computing scenarios such as high-performance computing (HPC)
Large and medium-sized database systems, caches, and search clusters
Servers of MMO games
Other general-purpose enterprise-level applications that have high performance requirements
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 3.4 GHz AMD EPYCTM Genoa processors that deliver a single-core turbo frequency of up to 3.75 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Is compatible with specific operating systems. For more information, see the Operating system versions that support AMD Genoa processors used by eighth-generation AMD instance types section of the "Compatibility between AMD instance types and operating systems" topic.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports the NVMe protocol. For more information, see NVMe protocol.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Offers burstable disk IOPS and burstable disk bandwidth for low-specification instances and provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Supports ERIs. For information about how to use ERIs, see Configure eRDMA on an enterprise-level instance.
Supports the Jumbo Frames feature. For more information, see Jumbo Frames.
Provides ultra-high packet forwarding rates.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
Security: Supports the vTPM feature. For more information, see Overview of trusted computing capabilities.
The r8ae instance family includes the following instance types: ecs.r8ae.large, ecs.r8ae.xlarge, ecs.r8ae.2xlarge, ecs.r8ae.4xlarge, and ecs.r8ae.8xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r8y, memory-optimized instance family
Introduction: This instance family uses in-house Arm-based YiTian 710 processors and the fourth-generation SHENLONG architecture to provide predictable and consistent ultra-high performance. This instance family utilizes fast path acceleration on chips to improve storage performance, network performance, and computing stability by an order of magnitude.
Supported scenarios: scenarios such as containers, microservices, websites and application servers, video encoding and decoding, high-performance computing, and CPU-based machine learning.
Compute:
Offers a CPU-to-memory ratio of 1:8.
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 the NVMe protocol. For more information, see NVMe protocol.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Supports ERIs. For information about how to use ERIs, see Configure eRDMA on an enterprise-level instance.
Supports the Jumbo Frames feature. For more information, see Jumbo Frames.
Provides ultra-high packet forwarding rates.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
The r8y instance family includes the following instance types: ecs.r8y.small, ecs.r8y.large, ecs.r8y.xlarge, ecs.r8y.2xlarge, ecs.r8y.4xlarge, ecs.r8y.8xlarge, ecs.r8y.16xlarge, and ecs.r8y.32xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r7a, memory-optimized instance family
Introduction: This instance family uses the third-generation SHENLONG architecture to provide predictable and consistent ultra-high performance. This instance family utilizes fast path acceleration on chips to improve storage performance, network performance, and computing stability by an order of magnitude.
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.55 GHz AMD EPYCTM MILAN processors that deliver a single-core turbo frequency of up to 3.5 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Is compatible with specific operating systems. For more information, see the Operating system versions that support AMD Genoa processors used by eighth-generation AMD instance types section of the "Compatibility between AMD instance types and operating systems" topic.
Supported scenarios:
High-performance databases and in-memory databases
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Blockchain applications
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Offers burstable disk IOPS and burstable disk bandwidth for low-specification instances and provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
The r7a instance family includes the following instance types: ecs.r7a.large, ecs.r7a.xlarge, ecs.r7a.2xlarge, ecs.r7a.4xlarge, ecs.r7a.8xlarge, ecs.r7a-nps1.8xlarge, ecs.r7a.16xlarge, ecs.r7a-nps1.16xlarge, and ecs.r7a.32xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r7, memory-optimized instance family
Introduction: This instance family uses the third-generation SHENLONG architecture to provide predictable and consistent ultra-high performance. This instance family utilizes fast path acceleration on chips to improve storage performance, network performance, and computing stability by an order of magnitude.
Supported scenarios:
High-performance databases and in-memory databases
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Scenarios that require secure and trusted computing
Compute:
Offers a CPU-to-memory ratio of 1:8.
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.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Offers burstable disk IOPS and burstable disk bandwidth for low-specification instances and provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides burstable network bandwidth for low-specification instances.
Provides high network performance based on large computing capacity.
Security:
Supports the vTPM feature. For more information, see Overview of trusted computing capabilities.
Supports the Enclave feature and provides a virtualization-based confidential computing environment. For more information, see Build a confidential computing environment by using Enclave.
The r7 instance family includes the following instance types: ecs.r7.large, ecs.r7.xlarge, ecs.r7.2xlarge, ecs.r7.3xlarge, ecs.r7.4xlarge, ecs.r7.6xlarge, ecs.r7.8xlarge, ecs.r7.16xlarge, and ecs.r7.32xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r6a, memory-optimized instance family
Introduction: This instance family offloads a large number of virtualization features to dedicated hardware by using the SHENLONG architecture to provide predictable and consistent ultra-high performance and reduce virtualization overheads.
Supported scenarios: scenarios where large volumes of packets are received and transmitted, video encoding and decoding, in-memory databases, enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters, and scenarios where applications such as DevOps applications are developed and tested.
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.6 GHz AMD EPYCTM ROME processors that deliver a turbo frequency of 3.3 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Is compatible with specific operating systems. For more information, see the Operating system versions that support AMD Genoa processors used by eighth-generation AMD instance types section of the "Compatibility between AMD instance types and operating systems" topic.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs, ESSD AutoPL disks, standard SSDs, and ultra disks. For information about disks, see Overview of Block Storage.
Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
The r6a instance family includes the following instance types: ecs.r6a.large, ecs.r6a.xlarge, ecs.r6a.2xlarge, ecs.r6a.4xlarge, ecs.r6a.8xlarge, and ecs.r6a.16xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r6e, enhanced-performance memory-optimized instance family
Introduction: This instance family offloads a large number of virtualization features to dedicated hardware by using the third-generation SHENLONG architecture to provide predictable and consistent ultra-high performance and reduce virtualization overheads. This instance family utilizes fast path acceleration on chips to improve storage performance, network performance, and computing stability by an order of magnitude.
Supported scenarios:
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
High-performance databases and in-memory databases
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.5 GHz Intel® Xeon® Platinum 8269CY (Cascade Lake) processors that deliver a turbo frequency of 3.2 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs and ESSD AutoPL disks. For information about disks, see Overview of Block Storage.
Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
NoteNetwork performance varies based on the instance families. For higher concurrent connection and network packet forwarding capabilities, we recommend that you use the g7ne instance family.
The r6e instance family includes the following instance types: ecs.r6e.large, ecs.r6e.xlarge, ecs.r6e.2xlarge, ecs.r6e.4xlarge, ecs.r6e.8xlarge, ecs.r6e.13xlarge, and ecs.r6e.26xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r6, memory-optimized instance family
Introduction: This instance family offloads a large number of virtualization features to dedicated hardware by using the SHENLONG architecture to provide predictable and consistent ultra-high performance and reduce virtualization overheads.
Supported scenarios:
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
High-performance databases and in-memory databases
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.5 GHz Intel® Xeon® Platinum 8269CY (Cascade Lake) processors that deliver a turbo frequency of 3.2 GHz to provide consistent computing performance.
Supports Hyper-Threading. By default, Hyper-Threading is enabled. For more information, see Specify and view CPU options.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs, ESSD AutoPL disks, standard SSDs, and ultra disks. For information about disks, see Overview of Block Storage.
NoteThe maximum performance of disks varies based on the instance families. A single instance of this instance family can deliver up to 200,000 IOPS.
Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
Instance type change: Supports changes to g6 or c6 instance types.
The r6 instance family includes the following instance types: ecs.r6.large, ecs.r6.xlarge, ecs.r6.2xlarge, ecs.r6.3xlarge, ecs.r6.4xlarge, ecs.r6.6xlarge, ecs.r6.8xlarge, ecs.r6.13xlarge, and ecs.r6.26xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
r5, memory-optimized instance family
Supported scenarios:
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
High-performance databases and in-memory databases
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.5 GHz Intel® Xeon® Platinum 8163 (Skylake) or Intel® Xeon® Platinum 8269CY (Cascade Lake) processors to provide consistent computing performance.
NoteInstances of this instance family may be deployed on different server platforms. If your business requires all instances to be deployed on the same server platform, we recommend that you use the r6, r6e, or r7 instance family instead.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports ESSDs, ESSD AutoPL disks, standard SSDs, and ultra disks. For information about disks, see Overview of Block Storage.
NoteThe maximum performance of disks varies based on the instance families. A single instance of this instance family can deliver up to 200,000 IOPS.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
The r5 instance family includes the following instance types: ecs.r5.large, ecs.r5.xlarge, ecs.r5.2xlarge, ecs.r5.3xlarge, ecs.r5.4xlarge, ecs.r5.6xlarge, ecs.r5.8xlarge, and ecs.r5.16xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
se1ne, network-enhanced memory-optimized instance family
Supported scenarios:
Scenarios where large volumes of packets are received and transmitted, such as live commenting on videos and telecom data forwarding
High-performance databases and in-memory databases
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.5 GHz Intel® Xeon® E5-2682 v4 (Broadwell) or Platinum 8163 (Skylake) or 8269CY (Cascade Lake) processors to provide consistent computing performance.
NoteInstances of this instance family may be deployed on different server platforms. If your business requires all instances to be deployed on the same server platform, we recommend that you use the r6, r6e, or r7 instance family instead.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports standard SSDs and ultra disks. For information about disks, see Overview of Block Storage.
Network:
Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 communication.
Provides ultra-high packet forwarding rates.
Provides high network performance based on large computing capacity.
The se1ne instance family includes the following instance types: ecs.se1ne.large, ecs.se1ne.xlarge, ecs.se1ne.2xlarge, ecs.se1ne.3xlarge, ecs.se1ne.4xlarge, ecs.se1ne.6xlarge, ecs.se1ne.8xlarge, and ecs.se1ne.14xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.
se1, memory-optimized instance family
Supported scenarios:
High-performance databases and in-memory databases
Data analytics, data mining, and distributed memory caching
Enterprise-level memory-intensive applications such as Hadoop clusters and Spark clusters
Compute:
Offers a CPU-to-memory ratio of 1:8.
Uses 2.5 GHz Intel® Xeon® E5-2682 v4 (Broadwell) or Platinum 8163 (Skylake) or 8269CY (Cascade Lake) processors to provide consistent computing performance.
Storage:
Is an instance family in which all instances are I/O optimized.
Supports standard SSDs and ultra disks. For information about disks, see Overview of Block Storage.
Network:
Supports only IPv4.
Provides high network performance based on large computing capacity.
The se1 instance family includes the following instance types: ecs.se1.large, ecs.se1.xlarge, ecs.se1.2xlarge, ecs.se1.4xlarge, ecs.se1.8xlarge, and ecs.se1.14xlarge. Click the following panel to see a table describing the specifications of each instance type in this instance family. For information about the metrics of instance types, see the Instance type metrics section of the "Classification and naming of instance types" topic.