This topic describes the release notes of ECS features.

March 2020

Feature Description Release date Supported region Documentation
Local snapshots The local snapshot feature is released for free public preview in Singapore. March 18, 2020 Some Snapshot overview
Instance families The i2ne and i2gne instance families with local SSDs are released. March 11, 2020 All Instance families

February 2020

Feature Description Release date Supported region Documentation
Local snapshots The local snapshot feature is released for public preview in China (Hohhot). The number of supported regions is increasing. February 14, 2020 Some Snapshot overview

January 2020

Feature Description Release date Supported region Documentation
Tags A wide range of tag functions are provided. You can use tags to control permissions of RAM users. You can also bind and modify tags by using Operation Orchestration Service (OOS). January 3, 2020 All
Local snapshots The local snapshot feature is released for public preview. You can create local snapshots for enhanced SSDs (ESSDs) and restore a disk from a local snapshot within seconds. You can use the local snapshot feature for free during the public preview period. January 17, 2020 China (Hong Kong) Snapshot overview
Instance families The d2s storage intensive big data instance family is released. January 17, 2020 Some Instance families
Instance families The vgn6i lightweight compute optimized instance family with GPU capabilities is released. January 16, 2020 Some Instance families
Instance families The s6 shared standard instance family is released. January 16, 2020 Some Instance families
Images 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. January 14, 2020 All Overview

November 2019

Feature Description Release date Supported region Documentation
Snapshots The quota for automatic snapshots is increased to 1,000. November 15, 2019 All Snapshot overview
Instance families The gn6e compute optimized instance family with GPU capabilities is released. November 14, 2019 Some Instance families
Instance families The ebmgn6e compute optimized ECS Bare Metal Instance family with GPU capabilities is released. November 14, 2019 Some Instance families

October 2019

Feature Description Release date Supported region Documentation
Instance families The hfc6, hfg6, and hfr6 instance families with high clock speed are released. October 15, 2019 Some Instance families
Instance family The ebmhfc6, ebmhfg6, and ebmhfr6 ECS Bare Metal Instance families are released. October 10, 2019 All Instance families

September 2019

Feature Description Release date Supported region Documentation
Resize disks
  • Standard SSDs and ultra disks can be resized to up to 32 TiB.
  • ESSDs can be resized online.
September 26, 2019 All
Instance families The ebmc6, ebmg6, and ebmr6 ECS Bare Metal Instance families are released. September 24, 2019 All Instance families
Instance families The t6 burstable instance family is released. September 12, 2019 Some Instance families
Security groups The maximum number of security group rules that can be contained in a security group is increased to 200. September 3, 2019 All Limits
Snapshots The individual quotas for manual snapshots and automatic snapshots are increased to 256. September 2, 2019 All Snapshot overview

August 2019

Feature Description Release date Supported region Documentation
Instance families The ebmgn6v compute optimized ECS Bare Metal Instance family with GPU capabilities is released. August 26, 2019 Some Instance families
Instance families The ebmgn6i compute optimized ECS Bare Metal Instance family with GPU capabilities is released. August 26, 2019 Some Instance families
Images The image export feature is available in all Alibaba Cloud regions. August 21, 2019 All Export a custom image
Snapshots The snapshot service is available for commercial use. All existing snapshots and new snapshots are billed on a pay-as-you-go basis. August 21, 2019 All Snapshot billing

July 2019

Feature Description Release date Supported region Documentation
Instance families The g6 general purpose instance family is released. July 30, 2019 Some Instance families
Instance families The c6 compute optimized instance family is released. July 30, 2019 Some Instance families
Instance families The r6 memory optimized instance family is released. July 30, 2019 Some Instance families
Instance families The ebmc5s compute optimized ECS Bare Metal Instance family with enhanced network performance is released. July 30, 2019 Some Instance families
Instance families The ebmg5s general purpose ECS Bare Metal Instance family with enhanced network performance is released. July 30, 2019 Some Instance families
Instance families The ebmr5s memory optimized ECS Bare Metal Instance family with enhanced network performance is released. July 30, 2019 Some Instance families

June 2019

Feature Description Release date Supported region Documentation
Auto provisioning Auto provisioning uses auto provisioning groups to schedule and maintain computing resources. This makes it easy to deploy clusters of instances across different billing methods, instance types, and zones. June 28, 2019 All Auto provisioning overview
ESSDs The enhanced SSD service is commercially available after the public review. Three performance levels of enhanced SSDs are released. June 28, 2019 Some. For more information about the supported regions, see Block Storage FAQ. Enhanced SSDs
vgn5i, a lightweight compute optimized instance family with GPU capabilities GRID drivers are provided to vgn5i instances. June 19, 2019 All

May 2019

Feature Description Release date Supported region Documentation
Block Storage Subscription disks can be created through API operations. May 15, 2019 All CreateDisk

April 2019

Feature Description Release date Supported region Documentation
Elastic network interfaces (ENIs) A single ENI supports multiple private IP addresses. April 28, 2019 All Assign a secondary private IP address
Block Storage You can resize data disks of an ECS instance by extending their capacities online to meet your storage requirements without restarting the instance. April 24, 2019 All Extend a disk online
Block Storage System disks can be resized. April 24, 2019 All Resize cloud disks offline
Snapshots Snapshots can be created for expired disks. April 20, 2019 All

March 2019

Feature Description Release date Supported region Documentation
Public images Public image Aliyun Linux 2 is released. March 27, 2019 All Overview of Aliyun Linux 2
Instance families The gn6i compute optimized instance family with GPU capabilities is released. March 21, 2019 All Instance families
Instance families The sccgn6 compute optimized SCC instance family with GPU capabilities is released. March 20, 2019 All Instance families
Instance families The vgn5i lightweight compute optimized instance family with GPU capabilities is released. March 19, 2019 All Instance families
Reserved instances The reserved instance feature is in invitational preview. March 18, 2019 All Reserved instance overview
Cloud Assistant Cloud Assistant is available for ECS instances of the classic network type. March 1, 2019 All Install the Cloud Assistant client

January 2019

Feature Description Release date Supported region Documentation
Event notification Status change events and alert events for recycling of preemptible instances are supported. January 29, 2019 All System events

December 2018

Feature Description Release date Supported region Documentation
Cloud Assistant Cloud Assistant is available in the UK (London) region. December 31, 2018 All Cloud Assistant overview
Preemptible instances Preemptible instances are billed by second. December 17, 2018 All Preemptible instances
Instances The feature of instance release protection is supported. December 14, 2018 All Instance release protection
ENIs The DescribeNetworkInterfaces operation can be used to query the public IP address that is attached to an ENI. December 4, 2018 All DescribeNetworkInterfaces

November 2018

Feature Description Release date Supported region Documentation
Custom images Packer can be used to create custom images. November 30, 2018 All Use Packer to create a custom image
Instance families The re4e memory optimized instance family with enhanced performance is released. November 30, 2018 All Instance families
Block Storage Subscription disks can be created separately and attached to subscription instances. November 29, 2018 All Create a subscription disk
Deployment sets The Alibaba Cloud deployment set feature is released. November 16, 2018 All Deployment set overview

October 2018

Feature Description Release date Supported region Documentation
Instance families The f3 compute optimized instance family with FPGAs is released. October 31, 2018 All Instance families
API best practices API best practices are released in the ECS console. October 19, 2018 All Create an instance by using the provided wizard

September 2018

Feature Description Release date Supported region Documentation
t5, a burstable instance family The unlimited mode is available for the t5 burstable instance family. September 30, 2018 All Unlimited mode
Instance metadata Information of O&M system events is included in instance metadata. September 14, 2018 All Instance metadata
Instance health status The health status of each ECS instance is displayed on the instance details page. September 14, 2018 All View the health status of an instance
Instance families The gn6v new generation instance family with GPU capabilities (V100 model) is released. September 12, 2018 All Instance families
Instance purchase Multiple instances can be renewed at a time and historical instances can be purchased. September 7, 2018 All Manual renewal
System events API operations used to create or cancel simulated events are released. September 3, 2018 All
Billing methods A subscription instance can be converted to a pay-as-you-go instance. September 1, 2018 All Switch the billing method from Subscription to Pay-As-You-Go

August 2018

Feature Description Release date Supported region Documentation
Local disks The O&M of instances to which local disks are attached is optimized. August 31, 2018 All Local disks
Cloud Assistant Cloud Assistant is supported in the ECS console. August 17, 2018 All Cloud Assistant
Instance families Super Computing Cluster (SCC) instance families are released. August 16, 2018 All Overview

July 2018

Feature Description Release date Supported region Documentation
Custom images Images in the qcow2 format can be imported. July 30, 2018 All
Security groups Security group rules can be modified. July 25, 2018 All Modify security group rules
Tags Tags can be bound to resources when you create the resources. July 20, 2018 All Bind a tag
Instance families The ebmc4 compute optimized ECS Bare Metal Instance family is released. July 18, 2018 All Instance families
Snapshots The estimated remaining time for creating snapshots is displayed. July 17, 2018 All Create a normal snapshot
Account and user privileges Quota management is supported. July 15, 2018 All Manage privileges and quotas
ESSDs The enhanced SSD feature is in public preview in Beijing Zone G. July 14, 2018 Beijing Zone G Disk overview
Instance troubleshooting System logs and screenshots can be viewed. July 13, 2018 All Console output and screenshot
Security groups You can submit a ticket to modify the maximum numbers of instances and security group rules that can be added to a security group. July 10, 2018 All Limits
Instance families The ic5 compute intensive instance family is released. July 9, 2018 All Instance families

June 2018

Feature Description Release date Supported region Documentation
Public images Operating systems including Red Hat can be selected from public images to create ECS instances. June 29, 2018 All Create an instance by using the provided wizard
Instance upgrade Pay-as-you-go instances can be upgraded or downgraded across instance families. June 15, 2018 All Instance families that support instance type changes
Billing methods Subscription instances can be renewed on a weekly basis. June 12, 2018 All Manual renewal
Security groups Security groups in the classic network can be cloned to a VPC. June 6, 2018 All Clone a security group
Active O&M Phase 2 of active O&M is brought online. June 1, 2018 All Overview of system events

May 2018

Feature Description Release date Supported region Documentation
Custom images The image compliance tool is released. May 28, 2018 All Use the image compliance tool
System events ECS system events are migrated to CloudMonitor and can be queried. May 25, 2018 All Overview of system events
Instance launch templates The feature of ECS instance launch template is released. May 11, 2018 All Create a launch template

April 2018

Feature Description Release date Supported region Documentation
Billing methods A pay-as-you-go instance can be converted to a subscription instance. April 23, 2018 All Switch the billing method from Pay-As-You-Go to Subscription
Instance configuration downgrade Configurations of an expired subscription instance can be downgraded during renewal. April 13, 2018 All Renew for configuration downgrade

March 2018

Feature Description Release date Supported region Documentation
GPU-based instances The NVIDIA GPU Cloud (NGC) GPU-accelerated container is supported. March 28, 2018 All Deploy an NGC on gn5 instances
System events The system event feature is released. March 26, 2018 All Overview of system events
ECS Bare Metal Instance ECS Bare Metal Instance is released. March 14, 2018 All ECS Bare Metal Instances
Instance identifier The ECS instance identifier feature is released. March 1, 2018 All Instance identity

February 2018

Feature Description Release date Supported region Documentation
ECS API The API operation used to check whether the configurations of ECS instances can be upgraded or downgraded is supported. February 10, 2018 All DescribeResourcesModification
Subscription instances The number of days during which an instance stays expired before it is released is extended from 7 to 15. February 7, 2018 All Subscription
ECS API API operations used to create and query resources are released. February 2, 2018 All DescribeAvailableResource

December 2017

Feature Description Release date Supported region Documentation
No Fees for Stopped Instances (VPC-Connected) The No Fees for Stopped Instances (VPC-Connected) feature is available for pay-as-you-go instances. December 14, 2017 All No Fees for Stopped Instances (VPC-Connected)
ENIs The ENI feature is released. December 8, 2017 All ENI overview
Instance family with FPGAs The f1 compute optimized instance family with FPGAs is released. December 2, 2017 All Instance families
ECS API The API operation used to create multiple instances at a time is released. December 1, 2017 All RunInstances
Instance troubleshooting The real-time diagnostics feature is supported in the ECS console. December 1, 2017 All Automatic diagnosis system

November 2017

Feature Description Release date Supported region Documentation
Cloud Migration tool The Cloud Migration tool is released. November 27, 2017 All Overview of the Cloud Migration tool
Security group rules Security group rules can be imported and exported. November 23, 2017 All Manage security group rules
Subscription instances The auto-renewal feature can be disabled for subscription instances. November 23, 2017 All ModifyInstanceAutoRenewAttribute
Billing methods API operations used to create and renew weekly subscription instances are released. November 3, 2017 All CreateInstance
Instance RAM roles RAM roles can be assigned to ECS instances. November 1, 2017 All What is the RAM role of an instance

October 2017

Feature Description Release date Supported region Documentation
EIPs The public IP address of an instance in a VPC can be converted to an EIP. October 31, 2017 All Convert an ECS public IP address to an EIP
Preemptible instances The preemptible instance feature is released. October 18, 2017 All Overview
t5, a burstable instance family The t5 burstable instance family is released. October 9, 2017 All Overview

September 2017

Feature Description Release date Supported region Documentation
Billing methods Bills of pay-as-you-go instances and disks are accurate to seconds and generated by hour. September 29, 2017 All Pay-as-you-go
gn5i, an instance family The gn5i compute optimized instance family with GPU capabilities is released. It is applicable to deep learning and online reasoning scenarios. September 23, 2017 All Instance families
ECS disk encryption ECS disks can be encrypted. September 5, 2017 All ECS disk encryption

August 2017

Feature Description Release date Supported region Documentation
Security group rules Security group rules can be configured based on the 5-tuple. August 31, 2017 All Security group quintuple rules
ClassicLink Instances in the classic network can be connected with instances in a VPC through ClassicLink. August 25, 2017 All Network types
Instance families The new-generation ECS instances with high clock speed and local SSD-based instances that are equipped with the Skylake processor and support 25GE networks are released. August 22, 2017 All Instance families
ECS API The API operation used to change the bandwidth configurations of instances is released. August 17, 2017 All ModifyInstanceNetworkSpec
Custom images Custom images can be imported. August 10, 2017 All Import custom images

July 2017

Feature Description Release date Supported region Documentation
Images 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. July 20, 2017 All Overview
Security groups Instances in a security group can be isolated based on a security group rule. July 7, 2017 All Isolation of instances within a security group

June 2017

Feature Description Release date Supported region Documentation
Classic network You cannot create classic network-type ECS instances for the first time after 12:00 (UTC+8) on June 16, 2017. We recommend that you use a VPC. June 16, 2017 All What is a VPC?

May 2017

Feature Description Release date Supported region Documentation
Instance RAM roles The API operation used to manage RAM roles of instances is released. May 26, 2017 All Use the instance RAM role by calling APIs
Instance families The network optimized instance family is released. May 23, 2017 All Instance families
Instance families The d1 storage intensive instance family is released. May 12, 2017 All Instance families
Security groups The default security group rule is modified to expose only ICMP ports, TCP port 22, and TCP port 3389. May 11, 2017 All Default rules of the default security group
Security groups Security groups can be backed up, overwritten, and restored. May 10, 2017 All Restore security group rules

April 2017

Feature Description Release date Supported region Documentation
SSH key pairs The SSH key pair feature is released. April 25, 2017 All SSH key pair overview

February 2017

Feature Description Release date Supported region Documentation
Custom images cloud-init is available for some custom images. February 24, 2017 All Install cloud-init
Instance families The i1 I/O optimized instance family with local SSDs is released. February 17, 2017 All Instance families
Snapshots System disk snapshots can be used to create data disks. February 15, 2017 All Create a disk by using a snapshot
Instance families The gn4 compute optimized instance family with GPU capabilities is released. February 14, 2017 All Instance families

January 2017

Feature Description Release date Supported region Documentation
Instance families The ga1 visualization and compute optimized instance family with GPU capabilities is released. January 24, 2017 All Instance families
Instance families The se1 dedicated instance family is released. January 21, 2017 All Instance families

2016

Feature Description Release date Supported region Documentation
Snapshots Snapshot 2.0 is released. March 15, 2016 All Snapshot overview
Disk resizing The feature of resizing system disks is released. January 15, 2016 All Resize cloud disks offline

2015

Feature Description Release date Supported region Documentation
Custom images The feature of importing custom images is released. December 15, 2015 All Instructions for importing images
Security groups Security groups are supported in the ECS console. November 2, 2015 All Create a security group
Alibaba Cloud Marketplace images Alibaba Cloud Marketplace images are available for commercial use. September 2, 2015 All Marketplace images
Tags The tag feature is released. August 20, 2015 All Overview
System disks The operating systems of pay-as-you-go instances can be replaced. August 13, 2015 All Replace the system disk (public images)
Custom images Custom images can be shared. May 15, 2015 All Shared images
Disk resizing Disks can be resized offline. April 20, 2015 All Overview
Custom images The image replication feature is released. January 26, 2015 All Copy custom images

2014

Feature Description Release date Supported region Documentation
Block Storage The independent disk feature is released. August 22, 2014 All Block Storage overview