In this article, we describe how to upgrade the CPU and memory specifications and peak bandwidth of your Subscription ECS instance.
If your Pay-As-You-Go ECS instance is bound to an elastic IP (EIP) address, you can use the Change Configuration function in the ECS console to modify the peak bandwidth on the EIP address. For more information about EIP address, see the EIP addresses documents.
Choose to upgrade configurations if you have the following requirements:
Upgrading the specifications of CPU and memory of your instance.
If you want to upgrade the specifications of an instance, only the higher specifications in the same generation are available. After you have applied the changes, restart your instance in the ECS console or using the RebootInstance interface.
Increasing the bandwidth for Internet access in either of the following scenarios:
You did not buy bandwidth (0 Mbps) when you were creating an instance of the Classic network type, and now you want to increase the bandwidth to provide Internet access. After you have applied the changes, restart your instance in the ECS console or using the RebootInstance interface.
You bought bandwidth for Internet access, and now you want to increase the bandwidth to meet your growing business requirements. After you have applied the changes, the new bandwidth takes effect immediately.
After you upgrade your configurations, the Internet and the intranet IP addresses remain unchanged.
This section introduces how to upgrade configurations in the ECS console. If you want to upgrade configurations by using the API, open a ticket to apply for permission in the whitelist.
To upgrade the configurations, follow these steps:
Log on to the ECS Console.
In the left-side navigation pane, click Instances.
Select a region.
In the instance list, find your instance, and in the Action column, click Change Configuration.
On the Change Configuration Guide dialog box, choose Upgrade configuration.
Click Continue to go to the Upgrade Configuration page.
Select a new instance type, or set a new value for the bandwidth. Click Pay to complete the order.
The new configuration takes effect immediately in most cases. However, if you changed the instance type, or if you increased the bandwidth from 0 Mbps for your instance of the Classic network type, restart the instance in the console or using the RebootInstance interface.