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Elastic Compute Service:Release notes

Last Updated:Feb 03, 2023

This topic describes the release notes for Elastic Compute Service (ECS) features and provides links to the relevant references.

For information about the release notes of images, see Release notes of public images, Release notes of Alibaba Cloud Linux 2 , and Release notes of Alibaba Cloud Linux 3.
For information about the release notes for Server Migration Center (SMC), see Release notes of SMC.

2022

Table 1. November 2022
Feature	Description	Release date	Region	References
Instance family	The g6r general-purpose instance family is released.	2022-11-17	Some	Overview of instance families
Instance family	The c8y compute-optimized instance family is released.	2022-11-15	Some	Overview of instance families
Instance family	The r8y memory-optimized instance family is released.	2022-11-15	Some	Overview of instance families

Table 2. September 2022
Feature	Description	Release date	Region	References
ESSD AutoPL	The ESSD AutoPL disk category is released. Alibaba Cloud provides ESSD AutoPL disks based on enhanced SSDs (ESSDs). ESSD AutoPL disks inherit the features and performance of ESSDs and provide the capability of decoupling disk capacity from disk performance.	2022-09-28	Some	ESSD AutoPL disks
Cross-zone instance type change	ECS instances can have their instance types changed across zones to meet your requirements for different instance specifications and instance migration.	2022-09-22	All	Change instance types across zones (invitational preview)

Table 3. August 2022
Feature	Description	Release date	Region	References
Anti-DDoS Basic Origin	The basic DDoS mitigation policy for ECS instances is adjusted and enforces new protection thresholds against DDoS attacks.	2022-08-31	All	Anti-DDoS Origin Basic
Instance family	The gn7e GPU-accelerated compute-optimized instance family is released.	2022-08-25	Some	Overview of instance families
Workbench	The file management and multi-terminal features are added to Workbench.	2022-08-09	All	Manage files Use the multi-terminal feature

Table 4. July 2022
Feature	Description	Release date	Region	References
ENI modification	The attributes of a primary elastic network interface (ENI) can be modified.	2022-07-28	All	Modify an ENI
Instance family	Some general-purpose instance families, compute-optimized instance families, memory-optimized, Super Computing Cluster (SCC) instance families, and instance families with high clock speeds can support a specific number of IPv6 addresses per ENI.	2022-07-28	All	Overview of instance families
Workbench	The system administration, script management, and task management features are added to Workbench.	2022-07-22	All	Perform system management Manage scripts Manage tasks
Image replication	An encrypted image copy task can be canceled.	2022-07-19	All	Copy an image
Alibaba Cloud Client	Alibaba Cloud Client is a client provided by Alibaba Cloud that can be used to view, query, and connect to ECS instances, elastic container instances, simple application servers, and instances that are managed by Alibaba Cloud.	2022-07-08	All	Overview of Alibaba Cloud Client

Table 5. June 2022
Feature	Description	Release date	Region	References
Operating system migration	Operating system migration reduces service downtime by retaining data stored on system disks. The following migrations are supported: CentOS 7 to Alibaba Cloud Linux 2 or Anolis OS 7. CentOS 8 to Alibaba Cloud Linux 3 or Anolis OS 8.	2022-06-17	All	Migrate an operating system
Scheduled execution of commands	Cloud Assistant can be used to create and run commands on schedule. This feature is applicable to recurring tasks, routine maintenance, and one-time tasks that need to be completed at a point in time.	2022-06-02	All	Use the immediate execution feature Create a command Run a command Check execution results and troubleshoot common issues

Table 6. May 2022
Feature	Description	Release date	Region	References
Replication pair-consistent group	Replication pair-consistent groups can be used to batch manage multiple cloud disks for disaster recovery scenarios. Replication pair-consistent groups help ensure that the data of cloud disks in the same replication pair-consistent group can be restored to the same point in time to allow for disaster recovery of one or more instances.	2022-05-27	All	Overview
Managed elastic network interface (ENI)	Managed ENIs are ENIs that are managed by Alibaba Cloud services. When you create ENIs for specific Alibaba Cloud services such as Container Service for Kubernetes (ACK) and NAT Gateway, you can configure the ENIs to be managed by the services.	2022-05-20	All	Managed ENIs

Table 7. April 2022
Feature	Description	Release date	Region	References
Instance family	The g8m general-purpose instance family is released.	2022-04-08	Some	Overview of instance families

Table 8. March 2022
Feature	Description	Release date	Region	References
Community image	Community images are publicly available. Custom images can be published as community images for other users to obtain and use.	2022-03-25	All	Overview Publish a community image Search for a community image Use a community image Unpublish a community image
Session Manager	Session Manager is provided by Cloud Assistant. Compared with SSH and Virtual Network Computing (VNC), Session Manager makes your connections to ECS instances more convenient and secure.	2022-03-22	Some	How Session Manager works Connect to an instance by using Session Manager Connect to an instance over SSH by using ali-instance-cli

Table 9. February 2022
Feature	Description	Release date	Region	References
Instance family	Instance types are added to the gn7i GPU-accelerated compute-optimized instance family.	2022-02-09	Some	Overview of instance families

Table 10. January 2022
Feature	Description	Release date	Region	References
Instance family	The d3c compute-intensive big data instance family is released.	2022-01-27	Some	Overview of instance families

2021

Table 11. November 2021
Feature	Description	Release date	Region	References
Snapshot	The instance snapshot feature is updated to the snapshot-consistent group feature.	2021-11-30	All	Create a snapshot-consistent group
Instance family	The ebmgn6ia GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2021-11-24	All	Overview of instance families
Instance family	The ebmg7a general-purpose ECS Bare Metal Instance family, ebmc7a compute-optimized ECS Bare Metal Instance family, and ebmr7a memory-optimized ECS Bare Metal Instance family are released.	2021-11-16	All	Overview of instance families
Instance family	The ebmg7 general-purpose ECS Bare Metal Instance family, ebmc7 compute-optimized ECS Bare Metal Instance family, and ebmr7 memory-optimized ECS Bare Metal Instance family are released.	2021-11-16	All	Overview of instance families
Instance family	The ebmgn7e GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2021-11-15	All	Overview of instance families
Instance family	The sgn7i-vws vGPU-accelerated instance family with shared CPUs is released.	2021-11-15	All	Overview of instance families

Table 12. October 2021
Feature	Description	Release date	Region	References
Instance family	The g7se storage-enhanced general-purpose instance family, c7se storage-enhanced compute-optimized instance family, and r7se storage-enhanced memory-optimized instance family are released.	2021-11-02	Some	Overview of instance families

Table 13. September 2021
Feature	Description	Release date	Region	References
Cloud Assistant	The Operation Content and Result Delivery feature can be used to deliver O&M task execution records to Object Storage Service (OSS) and Log Service for persistent storage.	2021-09-28	All	Use the Operation Content and Result Delivery feature
Instance family	The vgn7i-vws vGPU-accelerated instance family is released. This instance family comes with an NVIDIA GRID vWS license.	2021-09-15	All	Overview of instance families
Dedicated Block Storage Cluster	Dedicated Block Storage Cluster provides physically isolated storage resources. Exclusive access to the resources in a dedicated block storage cluster is granted to the creator of the cluster. Dedicated block storage clusters can be used to improve the security and O&M efficiency of your business data storage.	2021-09-13	Some	Overview

Table 14. August 2021
Feature	Description	Release date	Region	References
Network Connectivity Diagnostics	The Network Connectivity Diagnostics feature is used to diagnose the network connectivity between diagnostic objects within a virtual private cloud (VPC). The diagnostic objects can be ECS instances or ENIs. You can use this feature to check network connectivity and identify the causes of network connectivity issues.	2021-08-30	All	Diagnose network connectivity
Community image	Community images are publicly available. Custom images can be published as community images for other users to obtain and use.	2021-08-11	Some	Overview
Image	Alibaba Cloud Linux 3 supports Kernel Live Patching. This feature allows Alibaba Cloud Linux 3 to update its kernel with new patches without the need to restart instances.	2021-08-10	All	Overview
Economical mode	The feature name is changed from No Fees for Stopped Instances (VPC-Connected) to economical mode.	2021-08-09	All	Economical mode

Table 15. July 2021
Feature	Description	Release date	Region	References
Deployment Set	The maximum number of ECS instances that can be created in a deployment set is increased from 7 to 20.	2021-07-29	All	Overview
Resource Assurance	Tags can be added to open private pools for fine-grained use.	2021-07-19	All	Overview
Instance family	The gn7i GPU-accelerated compute-optimized instance family is released.	2021-07-01	All	Overview of instance families

Table 16. June 2021
Feature	Description	Release date	Region	References
Image	Alibaba Cloud Linux 2 supports Kernel Live Patching. This feature allows Alibaba Cloud Linux 2 to update its kernel with new patches without the need to restart instances.	2021-06-30	All	Overview of the Kernel Live Patching feature
Automatic reactivation	After overdue payments in your account are settled, the instances that were stopped due to these payments can be automatically reactivated. If the instances cannot be automatically reactivated, manually reactivate them in a timely manner.	2021-06-22	All	Start an instance
Instance family	The ebmgn7i GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2021-06-08	All	Overview of instance families

Table 17. May 2021
Feature	Description	Release date	Region	References
Instance family	The ebmc6me compute-optimized ECS Bare Metal Instance family is released.	2021-05-28	Some	Overview of instance families
Instance family	The g7a general-purpose instance family, c7a compute-optimized instance family, and r7a memory-optimized instance family are released.	2021-05-28	Some	Overview of instance families

Table 18. April 2021
Feature	Description	Release date	Region	References
Instance family	The g7 general-purpose instance family, c7 compute-optimized instance family, and r7 memory-optimized instance family are released.	2021-04-19	Some	Overview of instance families
Image	The Alibaba Cloud Linux 3 public image is released.	2021-04-16	All	Alibaba Cloud Linux overview
Reserved Instance	Reserved instances can be applied to instances of more instance families.	2021-04-15	All	Overview
Instance hibernation	The instance hibernation feature is released. When hibernated instances are woken, they automatically restore their applications to the states that the applications were in before hibernation.	2021-04-06	Some	Hibernate an instance
Snapshot	The instance snapshot feature is released. Snapshots can be simultaneously created for multiple cloud disks on an instance by creating a snapshot for the instance. This ensures the point-in-time write consistency of data.	2021-04-06	Some	Create a snapshot-consistent group
Snapshot	The application-consistent snapshot feature is released. Application-consistent snapshots can be used to roll back applications to ensure that the applications start in a consistent state.	2021-04-06	Some	Create application-consistent snapshots in the ECS console

Table 19. March 2021
Feature	Description	Release date	Region	References
Instance family	The g7t security-enhanced general-purpose instance family, c7t security-enhanced compute-optimized instance family, and r7t security-enhanced memory-optimized instance family are released.	2021-03-31	Some	Overview of instance families Overview
Instance family	The ebmhfg7 general-purpose ECS Bare Metal Instance family with high clock speeds, ebmhfc7 compute-optimized ECS Bare Metal Instance family with high clock speeds, and ebmhfr7 memory-optimized ECS Bare Metal Instance family with high clock speeds are released.	2021-03-03	Some	Overview of instance families

Table 20. February 2021
Feature	Description	Release date	Region	References
Instance family	The i3g instance family with local SSDs is released.	2021-02-26	All	Overview of instance families
Instance family	The g7ne network-enhanced general-purpose instance family is released.	2021-02-09	Some	Overview of instance families

Table 21. January 2021
Feature	Description	Release date	Region	References
Instance family	The gn7 GPU-accelerated compute-optimized instance family is released.	2021-01-12	Some	Overview of instance families
Image Builder	Image Builder is an all-in-one image customization service provided by ECS and can be used to customize images for ECS instances across regions and Alibaba Cloud accounts.	2021-01-11	All	Overview

History

Table 22. December 2020
Feature	Description	Release date	Region	References
Resource Assurance	Resource Assurance is a comprehensive service that guarantees the provision of resources to meet your business needs. It can be used to quantify the amount of available resources, reserve resources, and plan private pools.	2020-12-14	Some	Overview
faasutil	faasutil is released. faasutil is a next-generation command line tool provided by Alibaba Cloud FPGA as a Service (FaaS). This tool simplifies the management of FPGA-accelerated instances and helps improve their stability, security, and scalability.	2020-12-08	Some	Obtain faasutil Use faasutil
Instant access	The instant access feature is available for public preview in the China (Hohhot) region.	2020-12-03	Some	Enable or disable the instant access feature

Table 23. November 2020
Feature	Description	Release date	Region	References
Instance family	The re6p persistent memory-optimized instance family is released.	2020-11-04	Some	Overview of instance families
Instance family	The i3 instance family with local SSDs is released.	2020-11-03	Some	Overview of instance families

Table 24. October 2020
Feature	Description	Release date	Region	References
Instance family	The g6se storage-enhanced instance family is released.	2020-10-23	Some	Overview of instance families

Table 25. September 2020
Feature	Description	Release date	Region	References
Preemptible instance	A preemptible instance can be configured to have no protection period when it is created by calling an API operation.	2020-09-25	All	Overview RunInstances
Savings plan	Savings plans are provided as discount plans that can be applied to offset the bills of pay-as-you-go instances, excluding preemptible instances.	2020-09-18	All	Overview Savings plans Purchase and apply savings plans
Instance family	The g6t security-enhanced general-purpose instance family and c6t security-enhanced compute-optimized instance family are released.	2020-09-08	Some	Overview of instance families Overview
Instance family	The g6a general-purpose instance family, c6a compute-optimized instance family, and r6a memory-optimized instance family are released.	2020-09-07	Some	Overview of instance families
Instance family	The ebmg6a general-purpose ECS Bare Metal Instance family, ebmc6a compute-optimized ECS Bare Metal Instance family, and ebmr6a memory-optimized ECS Bare Metal Instance family are released.	2020-09-07	Some	Overview of instance families

Table 26. August 2020
Feature	Description	Release date	Region	References
Tag	Tags can be added to more resources, including reserved instances.	2020-08-18	All	Overview
Snapshot	Snapshots can be replicated across regions to improve service reliability and availability.	2020-08-14	Some	Copy a snapshot

Table 27. July 2020
Feature	Description	Release date	Region	References
Image family	The image family feature is released to facilitate smooth upgrade and rollback of images.	2020-07-02	All	Overview

Table 28. June 2020
Feature	Description	Release date	Region	References
Instance family	The d2c compute-intensive big data instance family is released.	2020-06-23	Some	Overview of instance families
Instance family	The scchfc6 compute-optimized Super Computing Cluster (SCC) instance family with high clock speeds, scchfg6 general-purpose SCC instance family with high clock speeds, and scchfr6 memory-optimized SCC instance family with high clock speeds are released.	2020-06-23	All	Overview of instance families
Instance family	The ebmc6e compute-optimized ECS Bare Metal Instance family with enhanced performance, ebmg6e general-purpose ECS Bare Metal Instance family with enhanced performance, and ebmr6e memory-optimized ECS Bare Metal Instance family with enhanced performance are released.	2020-06-23	All	Overview of instance families
Storage capacity unit (SCU)	SCUs can be used to offset the pay-as-you-go bills of different storage resources, such as disks, Object Storage Service (OSS) buckets, Apsara File Storage NAS file systems, and snapshots.	2020-06-23	All	Overview Storage capacity units Usage rules
Elastic Block Storage (EBS)	The sequence numbers of disks attached to ECS instances can be queried.	2020-06-16	All	Query the serial number of a disk
Network	Virtual private clouds (VPCs) of ECS instances can be changed in the ECS console. This feature is in invitational preview.	2020-06-10	Some	Change the VPC of an ECS instance
Enhanced SSD (ESSD)	ESSDs at the performance level 0 (PL0 ESSDs) are in public preview in the China (Hangzhou) and China (Beijing) regions.	2020-06-10	Some	ESSDs EBS performance
Local disk-related system event	System events about local disk damages can be queried and damaged local disks can be isolated in the ECS console.	2020-06-09	All	Isolate damaged local disks in the ECS console
Instance family	The hfg7 general-purpose instance family with high clock speeds, hfc7 compute-optimized instance family with high clock speeds, and hfr7 memory-optimized instance family with high clock speeds are released.	2020-06-09	Some	Overview of instance families
Instance family	The g6e general-purpose instance family with enhanced performance, c6e compute-optimized instance family with enhanced performance, and r6e memory-optimized instance family with enhanced performance are released.	2020-06-09	All	Overview of instance families
Instance family	The ebmre6p non-volatile memory-optimized ECS Bare Metal Instance family with enhanced performance is released.	2020-06-09	Some	Overview of instance families

Table 29. May 2020
Feature	Description	Release date	Region	References
Image	Technical support for the CoreOS Container Linux public images is discontinued. CoreOS Container Linux has reached its end of life, and no more security patches are provided. For security concerns, we recommend that you no longer use CoreOS Container Linux images. Alibaba Cloud will soon release Fedora CoreOS public images as a replacement.	2020-05-26	All	Release notes
Reserved instance	The normalization factors of instance types can be queried to help understand the computing power requirements in the splitting and merging of reserved instances and the size flexibility of regional reserved instances.	2020-05-14	All	Overview View normalization factors

Table 30. April 2020
Feature	Description	Release date	Region	References
Instance family	The ebmre6-6t memory-optimized ECS Bare Metal Instance family with enhanced performance is released.	2020-04-28	All	Overview of instance families
Instance family	The re6 memory-optimized instance family with enhanced performance is released.	2020-04-20	Some	Overview of instance families

Table 31. March 2020
Feature	Description	Release date	Region	References
Instance family	The i2ne and i2gne instance families with local SSDs are released.	2020-03-11	All	Overview of instance families

Table 32. January 2020
Feature	Description	Release date	Region	References
Tag	A wide range of tag features are provided. Tags can be used to control permissions of Resource Access Management (RAM) users. Tags can be added and modified by using Operation Orchestration Service (OOS).	2020-01-03	All	Control access to resources by using tags Create a resource with a specific tag Use OOS to add tags to multiple ECS resources at a time Use OOS to modify a tag value of multiple resources
Instance family	The d2s storage-intensive big data instance family is released.	2020-01-17	Some	Overview of instance families
Instance family	The vgn6i lightweight GPU-accelerated compute-optimized instance family is released.	2020-01-16	Some	Overview of instance families
Instance family	The s6 shared standard instance family is released.	2020-01-16	Some	Overview of instance families
Image	Technical support for the Windows Server 2008 and Windows Server 2008 R2 public images is discontinued. We recommend that you upgrade to Windows Server 2012 or later at your earliest convenience.	2020-01-14	All	Overview

Table 33. December 2019
Feature	Description	Release date	Region	References
SCU	40 GiB, 100 GiB, and 500 GiB are added as capacity options for SCUs.	2019-12-05	Some	Overview

Table 34. November 2019
Feature	Description	Release date	Region	References
Tag	The tag editor feature is released. Up to 5,000 resource data entries across services and regions can be queried. The tags of resources can be edited, and resource information can be exported.	2019-11-28	All	Use the tag editor to manage resource tags
Snapshot	The quota for automatic snapshots is increased to 1,000.	2019-11-15	All	Snapshot overview
Instance family	The gn6e GPU-accelerated compute-optimized instance family is released.	2019-11-14	Some	Overview of instance families
Instance family	The ebmgn6e GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2019-11-14	Some	Overview of instance families

Table 35. October 2019
Feature	Description	Release date	Region	References
Instance family	The hfc6, hfg6, and hfr6 instance families with high clock speeds are released.	2019-10-15	Some	Overview of instance families
Instance family	The ebmhfc6, ebmhfg6, and ebmhfr6 ECS Bare Metal Instance families are released.	2019-10-10	All	Overview of instance families

Table 36. September 2019
Feature	Description	Release date	Region	References
Disk resizing	Standard SSDs and ultra disks can be resized to up to 32 TiB. ESSDs can be resized online.	2019-09-26	All	Overview Step 1: Resize a disk to extend its capacity
Instance family	The ebmc6, ebmg6, and ebmr6 ECS Bare Metal Instance families are released.	2019-09-24	All	Overview of instance families
Instance family	The t6 burstable instance family is released.	2019-09-12	Some	Overview of instance families
Security group	The maximum number of security group rules that a security group can contain is increased to 200.	2019-09-03	All	Limits
Snapshot	The individual quotas for manual snapshots and automatic snapshots are increased to 256.	2019-09-02	All	Snapshot overview

Table 37. August 2019
Feature	Description	Release date	Region	References
Instance family	The ebmgn6v GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2019-08-26	Some	Overview of instance families
Instance family	The ebmgn6i GPU-accelerated compute-optimized ECS Bare Metal Instance family is released.	2019-08-26	Some	Overview of instance families
Image	The image export feature is available in all Alibaba Cloud regions.	2019-08-21	All	Export a custom image
Snapshot	The snapshot service is available for commercial use. All existing and new snapshots are billed on a pay-as-you-go basis.	2019-08-21	All	Snapshots

Table 38. July 2019
Feature	Description	Release date	Region	References
Instance family	The g6 general-purpose instance family is released.	2019-07-30	Some	Overview of instance families
Instance family	The c6 compute-optimized instance family is released.	2019-07-30	Some	Overview of instance families
Instance family	The r6 memory-optimized instance family is released.	2019-07-30	Some	Overview of instance families
Instance family	The ebmc5s network-enhanced compute-optimized ECS Bare Metal Instance family is released.	2019-07-30	Some	Overview of instance families
Instance family	The ebmg5s network-enhanced general-purpose ECS Bare Metal Instance family is released.	2019-07-30	Some	Overview of instance families
Instance family	The ebmr5s network-enhanced memory-optimized ECS Bare Metal Instance family is released.	2019-07-30	Some	Overview of instance families

Table 39. June 2019
Feature	Description	Release date	Region	References
Auto Provisioning	Auto Provisioning uses auto provisioning groups to schedule and maintain computing resources. This makes it easy to deploy clusters of instances across billing methods, instance types, and zones.	2019-06-28	All	Overview
ESSD	The ESSD service is available for commercial use after the public preview is complete. Three performance levels of ESSDs are released.	2019-06-28	Some. For more information about the supported regions, see FAQ.	ESSDs
vgn5i, lightweight GPU-accelerated compute-optimized instance family	GRID drivers are provided for vgn5i instances.	2019-06-19	All	Install a GRID driver on a Linux vGPU-accelerated instance

Table 40. May 2019
Feature	Description	Release date	Region	References
EBS	Subscription disks can be created by calling API operations.	2019-05-15	All	CreateDisk

Table 41. April 2019
Feature	Description	Release date	Region	References
Elastic network interface (ENI)	A single ENI can be assigned multiple private IP addresses.	2019-04-28	All	Assign secondary private IP addresses
EBS	Data disks of an ECS instance can be resized online to meet storage requirements without restarting the instance.	2019-04-24	All	Step 1: Resize a disk to extend its capacity
EBS	System disks can be resized.	2019-04-24	All	Resize disks offline for Linux and Windows instances
Snapshot	Snapshots can be created for expired disks.	2019-04-20	All	Create a snapshot for a disk CreateSnapshot

Table 42. March 2019
Feature	Description	Release date	Region	References
Public image	Aliyun Linux 2 public images are released.	2019-03-27	All	Overview
Instance family	The gn6i GPU-accelerated compute-optimized instance family is released.	2019-03-21	All	Overview of instance families
Instance family	The sccgn6 GPU-accelerated compute-optimized SCC instance family is released.	2019-03-20	All	Overview of instance families
Instance family	The vgn5i lightweight GPU-accelerated compute-optimized instance family is released.	2019-03-19	All	Overview of instance families
Reserved instance	The reserved instance feature is in invitational preview.	2019-03-18	All	Overview
Cloud Assistant	Cloud Assistant is available for ECS instances in the classic network.	2019-03-01	All	Install the Cloud Assistant client

Table 43. January 2019
Feature	Description	Release date	Region	References
Event notification	Status change events and alert events for the recycling of preemptible instances are supported.	2019-01-29	All	Overview

Table 44. December 2018
Feature	Description	Release date	Region	References
Cloud Assistant	Cloud Assistant is available in the UK (London) region.	2018-12-31	All	Overview
Preemptible instance	Preemptible instances are billed by second.	2018-12-17	All	Preemptible instances
Instance	The release protection feature is supported.	2018-12-14	All	Enable or disable release protection for ECS instances
ENI	The DescribeNetworkInterfaces operation can be called to query the public IP address associated with an ENI.	2018-12-04	All	DescribeNetworkInterfaces

Table 45. November 2018
Feature	Description	Release date	Region	References
Custom image	Packer can be used to create custom images.	2018-11-30	All	Use Packer to create a custom image
Instance family	The re4e high memory instance family is released.	2018-11-30	All	Overview of instance families
EBS	Subscription disks can be separately created and attached to subscription instances.	2018-11-29	All	Create a subscription disk
Deployment set	The deployment set feature is released.	2018-11-16	All	Overview

Table 46. October 2018
Feature	Description	Release date	Region	References
Instance family	The f3 FPGA-accelerated compute-optimized instance family is released.	2018-10-31	All	Overview of instance families
API best practices	API best practices are released in the ECS console.	2018-10-19	All	Create an instance by using the wizard

Table 47. September 2018
Feature	Description	Release date	Region	References
t5, burstable instance family	Unlimited mode is available for the t5 burstable instance family.	2018-09-30	All	Unlimited mode
Instance metadata	Information of O&M system events is included in instance metadata.	2018-09-14	All	Overview of ECS instance metadata
Instance health status	The health status of each ECS instance is displayed on the instance details page.	2018-09-14	All	View the health status of an instance
Instance family	The gn6v new-generation GPU-accelerated instance family (V100 model) is released.	2018-09-12	All	Overview of instance families
Instance purchase	Multiple instances can be renewed at a time, and historical instances can be purchased.	2018-09-07	All	Manually renew an instance
System event	API operations used to create or cancel simulated events are released.	2018-09-03	All	CreateSimulatedSystemEvents CancelSimulatedSystemEvents
Billing method	Subscription instances can be changed into pay-as-you-go instances.	2018-09-01	All	Change the billing method of an instance from subscription to pay-as-you-go

Table 48. August 2018
Feature	Description	Release date	Region	References
Local disk	The O&M of instances that have local disks attached is optimized.	2018-08-31	All	Local disks
Cloud Assistant	Cloud Assistant is supported in the ECS console.	2018-08-17	All	Overview
Instance family	SCC instance families are released.	2018-08-16	All	Overview of instance families

Table 49. July 2018
Feature	Description	Release date	Region	References
Custom image	Images in the qcow2 format can be imported.	2018-07-30	All	Import custom images ImportImage
Security group	Security group rules can be modified.	2018-07-25	All	Modify security group rules
Tag	Tags can be added to resources when the resources are created.	2018-07-20	All	Create or add a tag
Instance family	The ebmc4 compute-optimized ECS Bare Metal Instance family is released.	2018-07-18	All	Overview of instance families
Snapshot	The estimated remaining time required to create snapshots is displayed.	2018-07-17	All	Create a snapshot of a disk
Account and user privileges	Quota management is supported.	2018-07-15	All	View quotas (old version)
ESSD	The ESSD service is in public preview in Beijing Zone G.	2018-07-14	Beijing Zone G	Disks
Instance troubleshooting	System logs and screenshots can be viewed.	2018-07-13	All	View system logs and screenshots
Security group	A ticket can be submitted to modify the maximum numbers of instances and security group rules that can be added to a security group.	2018-07-10	All	Limits
Instance family	The ic5 compute-intensive instance family is released.	2018-07-09	All	Overview of instance families

Table 50. June 2018
Feature	Description	Release date	Region	References
Public image	Operating systems including Red Hat can be selected from public images to create ECS instances.	2018-06-29	All	Create an instance by using the wizard
Instance configuration upgrade	The configurations of pay-as-you-go instances can be upgraded or downgraded across instance families.	2018-06-15	All	Instance families that support instance type changes
Billing method	Subscription instances can be renewed on a weekly basis.	2018-06-12	All	Manually renew an instance
Security group	Security groups in the classic network can be cloned to a VPC.	2018-06-06	All	Clone a security group
Active O&M	Phase 2 of active O&M is brought online.	2018-06-01	All	Overview

Table 51. May 2018
Feature	Description	Release date	Region	References
Custom image	The image compliance tool is released.	2018-05-28	All	Check whether an image meets the import requirements
System event	ECS system events are updated to CloudMonitor and can be queried.	2018-05-25	All	Overview
Launch template	The launch template feature is released.	2018-05-11	All	Create a launch template

Table 52. April 2018
Feature	Description	Release date	Region	References
Billing method	Pay-as-you-go instances can be changed into subscription instances.	2018-04-23	All	Change the billing method of an ECS instance from pay-as-you-go to subscription
Instance configuration downgrade	The configurations of expired subscription instances can be downgraded while the instances are being renewed.	2018-04-13	All	Downgrade the configurations of an instance during renewal

Table 53. March 2018
Feature	Description	Release date	Region	References
GPU-accelerated instance	NVIDIA GPU Cloud (NGC) GPU-accelerated containers are supported.	2018-03-28	All	Deploy an NGC environment on gn5 instances
System event	The system event feature is released.	2018-03-26	All	Overview
ECS Bare Metal Instance	ECS Bare Metal Instance is released.	2018-03-14	All	Overview
Instance identity	The ECS instance identity feature is released.	2018-03-01	All	Use instance identities

Table 54. February 2018
Feature	Description	Release date	Region	References
ECS API	The API operation used to check whether the configurations of ECS instances can be upgraded or downgraded is released.	2018-02-10	All	DescribeResourcesModification
Subscription instance	The number of days during which an instance stays expired before it is released is extended from 7 to 15.	2018-02-07	All	Subscription
ECS API	API operations used to create and query resources are released.	2018-02-02	All	DescribeAvailableResource

Table 55. December 2017
Feature	Description	Release date	Region	References
No Fees for Stopped Instances (VPC-Connected)	The No Fees for Stopped Instances (VPC-Connected) feature is supported for pay-as-you-go instances.	2017-12-14	All	Economical mode
ENI	The ENI feature is released.	2017-12-08	All	Overview
FPGA-accelerated instance family	The f1 FPGA-accelerated compute-optimized instance family is released.	2017-12-02	All	Overview of instance families
ECS API	The API operation used to batch create instances is released.	2017-12-01	All	RunInstances
Instance troubleshooting	The real-time diagnostics feature is supported in the ECS console.	2017-12-01	All	Automatic diagnosis system

Table 56. November 2017
Feature	Description	Release date	Region	References
Cloud Migration tool	The Cloud Migration tool is released.	2017-11-27	All	What is SMC?
Security group rule	Security group rules can be imported and exported.	2017-11-23	All	Manage security group rules
Subscription instance	The auto-renewal feature can be disabled for subscription instances.	2017-11-23	All	ModifyInstanceAutoRenewAttribute
Billing method	API operations used to create and renew weekly subscription instances are released.	2017-11-03	All	CreateInstance
Instance RAM role	RAM roles can be assigned to ECS instances.	2017-11-01	All	Overview

Table 57. October 2017
Feature	Description	Release date	Region	References
Elastic IP Address (EIP)	The public IP addresses of instances in VPCs can be converted into EIPs.	2017-10-31	All	Convert the static public IP address of an instance in a VPC to an EIP
Preemptible instance	The preemptible instance feature is released.	2017-10-18	All	Overview
t5, burstable instance family	The t5 burstable instance family is released.	2017-10-09	All	Overview

Table 58. September 2017
Feature	Description	Release date	Region	References
Billing method	Bills of pay-as-you-go instances and disks are accurate to the second and generated by hour.	2017-09-29	All	Pay-as-you-go
gn5i instance family	The gn5i GPU-accelerated compute-optimized instance family is released. It is applicable to deep learning and online inference scenarios.	2017-09-23	All	Overview of instance families
Disk encryption	Disks can be encrypted.	2017-09-05	All	Encryption overview

Table 59. August 2017
Feature	Description	Release date	Region	References
Security group rule	Security group rules can be configured based on 5-tuples.	2017-08-31	All	Security group quintuple rules
ClassicLink	ClassicLink allows instances in the classic network to be connected to instances in VPCs.	2017-08-25	All	Network types
Instance family	The new-generation instance families with high clock speeds and instance families with local SSDs are released. They are powered by Skylake processors and support 25 Gigabit Ethernet.	2017-08-22	All	Overview of instance families
ECS API	The API operation used to change the bandwidth configurations of instances is released.	2017-08-17	All	ModifyInstanceNetworkSpec
Custom image	Custom images can be imported.	2017-08-10	All	Import custom images

Table 60. July 2017
Feature	Description	Release date	Region	References
Image	Technical support for the Windows Server 2003 public images is discontinued. We recommend that you upgrade to Windows Server 2012 or later at your earliest convenience.	2017-07-20	All	Overview
Security group	Security group rules can be configured to isolate the instances in a security group from each other.	2017-07-07	All	Network isolation within a basic security group

Table 61. June 2017
Feature	Description	Release date	Region	References
Classic network	The classic network is unavailable for users who create ECS instances at or after 12:00:00 on June 16, 2017 (UTC+8) for the first time. We recommend that you use VPC.	2017-06-16	All	What is a VPC?

Table 62. May 2017
Feature	Description	Release date	Region	References
Instance RAM role	The API operation used to manage instance RAM roles is released.	2017-05-26	All	Use an instance RAM role by calling API operations
Instance family	The network-enhanced instance family is released.	2017-05-23	All	Overview of instance families
Instance family	The d1 storage-intensive instance family is released.	2017-05-12	All	Overview of instance families
Security group	The default security group rule is modified to expose only Internet Control Message Protocol (ICMP) ports, Transmission Control Protocol (TCP) port 22, and TCP port 3389.	2017-05-11	All	Overview
Security group	Security groups can be backed up, overwritten, and restored.	2017-05-10	All	Restore security group rules

Table 63. April 2017
Feature	Description	Release date	Region	References
SSH key pair	The SSH key pair feature is released.	2017-04-25	All	Overview

Table 64. February 2017
Feature	Description	Release date	Region	References
Custom image	cloud-init supports some custom images.	2017-02-24	All	Install cloud-init
Instance family	The i1 I/O optimized instance family with local SSDs is released.	2017-02-17	All	Overview of instance families
Snapshot	System disk snapshots can be used to create data disks.	2017-02-15	All	Create a disk from a snapshot
Instance family	The gn4 GPU-accelerated compute-optimized instance family is released.	2017-02-14	All	Overview of instance families

Table 65. January 2017
Feature	Description	Release date	Region	References
Instance family	The ga1 GPU-accelerated visualization and compute-optimized instance family is released.	2017-01-24	All	Overview of instance families
Instance family	The se1 dedicated instance family is released.	2017-01-21	All	Overview of instance families

Table 66. 2016
Feature	Description	Release date	Region	References
Snapshot	Snapshot 2.0 is released.	2016-03-15	All	Snapshot overview
Disk resizing	System disks can be resized.	2016-01-15	All	Resize disks offline for Linux and Windows instances

Table 67. 2015
Feature	Description	Release date	Region	References
Custom image	Custom images can be imported.	2015-12-15	All	Instructions for importing images
Security group	Security groups are supported in the ECS console.	2015-11-02	All	Create a security group
Alibaba Cloud market mirror image	Alibaba Cloud market mirror images are available for commercial use.	2015-09-02	All	Alibaba Cloud market mirror images
Tag	The tag feature is released.	2015-08-20	All	Overview
System disk	The operating systems of pay-as-you-go instances can be replaced.	2015-08-13	All	Replace the operating system of an instance
Custom image	Custom images can be shared.	2015-05-15	All	Share or unshare a custom image
Disk resizing	Disks can be resized offline.	2015-04-20	All	Overview
Custom image	The image replication feature is released.	2015-01-26	All	Copy an image

Table 68. 2014
Feature	Description	Release date	Region	References
EBS	The independent disk feature is released.	2014-08-22	All	Elastic Block Storage devices

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