Downgrade the instance type, modify the public bandwidth configurations, or change the billing method of data disks when you renew a subscription instance - Elastic Compute Service

Elastic Compute Service (ECS) provides the renewal and downgrade feature that allows you to renew a subscription instance and downgrade the configurations of the instance at the same time. When you renew a subscription instance, you can downgrade the instance type, modify the public bandwidth configurations, or change the billing method of data disks to meet your business requirements or reduce instance costs for the next billing cycle.

Usage notes

Before you use the renewal and downgrade feature to renew a subscription instance and downgrade the configurations of the instance, take note of the items that are described in the following table.

Item	Description
Applicable timeframe	From 15 days before the instance expires until the instance is released. Note For information about the duration from the expiration date to the release date, see Renew a subscription instance.
Supported downgrade operations	Downgrade the instance type. You can downgrade the subscription instance to a different instance type within the same instance family when you renew the instance. You can perform this downgrade and renewal operation only within 15 days before the instance expires. Important When you renew a subscription instance and downgrade the configurations of the instance at the same time, you can downgrade the instance only to a different instance type within the same instance family. If you want to downgrade the instance to an instance type that belongs to a different instance family, separately change the instance type. For more information, see Change instance types. If you want to change the instance type of an expired subscription instance, renew the instance and then change the instance type. For more information, see Renew a subscription instance and Change instance types. Modify the public bandwidth configurations. If the subscription instance uses the pay-by-bandwidth billing method for network usage, you can decrease the bandwidth value, or change the billing method for network usage to pay-by-traffic and specify a bandwidth limit for traffic. If the subscription instance uses the pay-by-traffic billing method for network usage, you can decrease the bandwidth limit for traffic. Change the billing method of data disks. You can change the billing method of data disks that are attached to the subscription instance from subscription to pay-as-you-go. Note If you want to resize cloud disks that are attached to the instance by extending the disk capacity, shrink the cloud disks, or change the categories of the disks, see Resize cloud disks, Shrink disks, or Change the category of a disk.
Need for instance restart	Downgrade instance type: Required For the downgrade to take effect, you can either wait for an automatic system restart or manually restart the instance during the new renewal period. Warning The system automatically restarts the instance at the Restart Time that you specify when you perform the Renew and Downgrade action. Schedule this time carefully to avoid service interruptions. If you manually restart the instance after the new renewal period begins but before the scheduled restart time, the downgrade takes effect immediately and the scheduled automatic restart task is canceled. If you manually restart the instance before the new renewal period begins, the downgrade does not take effect, and the scheduled automatic restart task is still performed at the specified time. Change public bandwidth: Not required Change the billing method for a data disk: Not required
Effective time of new configurations	Downgrade the instance type: The new instance type takes effect when the instance is automatically or manually restarted in the next billing cycle. The original instance type is valid for the remaining duration of the current billing cycle. Modify the public bandwidth configurations or change the billing method of data disks: The new configurations do not take effect until the next billing cycle starts. The original configurations are valid for the remaining duration of the current billing cycle.
Impacts	If you renew a subscription instance and downgrade the configurations of the instance before the instance expires, you cannot perform the following operations within the remainder of the current billing cycle: Upgrade the instance type. Temporarily upgrade the public bandwidth. Resize disks by extending their capacity, including extending partitions and file systems.

Procedure

Go to ECS console - Instance.
In the top navigation bar, select the region and resource group of the resource that you want to manage.
Find the subscription instance that you want to renew. In the Actions column, choose > Upgrade/Downgrade > Renew and Downgrade.
Follow the on-screen instructions to renew the subscription instance and downgrade the instance configurations.
Warning
If you change the instance type, you must select a Restart Time. The downgrade takes effect after the instance automatically restarts at the specified time. Schedule the restart time carefully to avoid service interruptions.
If you manually restart the instance after the new renewal period begins but before the scheduled restart time, the downgrade takes effect immediately and the scheduled automatic restart task is canceled.
If you manually restart the instance before the new renewal period begins, the downgrade does not take effect, and the scheduled automatic restart task is still performed at the specified time.
Read and select ECS Terms of Service, click Create Order, and then follow the on-screen instructions to complete the payment.

What to do next

If you downgrade the instance type, the downgrade takes effect after the instance automatically restarts at the scheduled Restart Time. You can manually restart the instance to apply the downgrade after the new renewal period begins but before the scheduled restart time. This action cancels the scheduled automatic restart task.
Important
If you manually restart the instance before the new renewal period begins, the downgrade does not take effect, and the scheduled automatic restart task is still performed at the specified time.
The first time you change the public bandwidth value of a subscription instance that resides in the classic network from 0 Mbit/s to a non-zero value, restart the instance in the ECS console or by calling the RebootInstance operation within the first seven days of the next billing cycle to make the new configurations take effect.