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Elastic Compute Service:downgrade the configurations of an instance during renewal

Last Updated:Feb 08, 2024

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

Usage notes

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

Item

Description

Applicable timeframe

From 15 days before instance expiration until instance release.

Supported downgrade operations

  • Downgrade the instance type. You can perform this operation only within 15 days before the subscription instance expires.

  • Change 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 on the subscription instance from subscription to pay-as-you-go.

Need for instance restart

  • If you downgrade the instance type of the subscription instance during instance renewal, you must restart the instance for the new instance type to take effect.

    • If you schedule the restart of the instance, the instance is automatically restarted at the point in time that you specify.

    • If you do not schedule the restart of the instance, restart the instance during the next billing cycle.

  • If you change the public bandwidth configurations of the subscription instance during instance renewal, you do not need to restart the instance.

  • If you change the billing method of data disks on the subscription instance during instance renewal, you do not need to restart the instance.

Effective time of new configurations

  • If you downgrade the instance type of the subscription instance during instance renewal, the new instance type takes effect when the instance is automatically or manually restarted during the next billing cycle. The original instance type remains in effect during the remainder of the current billing cycle.

  • If you change the public bandwidth configurations or the billing method of data disks during instance renewal, the new configurations do not take effect until the next billing cycle starts. The original configurations remain in effect during the remainder of the current billing cycle.

Impacts

If you renew and downgrade a subscription instance before the instance expires, you cannot perform the following operations during the remainder of the current billing cycle:

  • Upgrade the instance type.

  • Temporarily upgrade the public bandwidth.

  • Resize disks, including partitions and file systems.

Procedure

  1. Log on to the ECS console.

  2. In the left-side navigation pane, choose Instances & Images > Instances.

  3. In the top navigation bar, select the region and resource group to which the resource belongs. 地域

  4. Find the instance that you want to renew. In the Actions column, choose image.png > Upgrade/Downgrade > Renew and Downgrade.

  5. Follow the on-screen instructions to change the instance configurations and renew the instance.

  6. Read and select ECS Service Terms, click Create Order, and then follow the on-screen instructions to complete the payment.

What to do next

The first time you change the public bandwidth value of an 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.