Change an image - Elastic Desktop Service - Alibaba Cloud Documentation Center

If you want to replace the operating system of a cloud computer or a cloud computer pool, or you want to initialize a cloud computer, you can change the image of the cloud computer or cloud computer pool. This topic describes how to change the image of a cloud computer, cloud computer pool, or pooled cloud computer.

Background information

Limits

You cannot change GPU images to non-GPU images, or change non-GPU images to GPU images. If a cloud computer is of the Enterprise Graphics type, you can use only a GPU image. If a cloud computer is of the non-Enterprise Graphics type, you can use only a non-GPU image.
When you change the image of a cloud computer, you can also change the system disk and data disk of the cloud computer. You need to only select an image that contains a data disk and select Simultaneously Replace Data Disk. If the capacity of the data disk contained in the selected image exceeds that of the original data disk of the cloud computer, you cannot change the original data disk.
When you change the image of a cloud computer pool or a pooled cloud computer, you can only initialize the original system disk by using the new image. You cannot change the original data disk.

Effects

By default, the system uses the new image to initialize the original system disk of a cloud computer. The data contained in the original system disk is cleared after the initialization. Snapshots created based on the original system disk become invalid. The system also deletes all snapshots related to the original system disk.
Warning
After you change the image of a cloud computer, the software data and private data contained in the original system disk and data disk are cleared and cannot be recovered. Proceed with caution when you change an image.
When you change the image of a cloud computer pool, the cloud computers on which the new image takes effect depend on the scope you specify. For more information, see Change the image of a cloud computer pool.
When you change the image of a pooled cloud computer, the system only changes the image of the cloud computer.

Impacts of operating systems on data disks

Whether the operating system of the desired image is the same as that of the image used by a cloud computer determines how the data contained in the data disk is handled.

Operation

Same operating system

Different operating systems

Change the image of a cloud computer

If the desired image contains a data disk, you can select Simultaneously Replace Data Disk based on your business requirements.

If you want to simultaneously change the original data disk of the cloud computer, select Simultaneously Replace Data Disk. In this case, the original data disk of the cloud computer is replaced by the data disk contained in the desired image. Snapshots created based on the original data disk are automatically deleted.
If you do not want to simultaneously change the original data disk of the cloud computer, do not select Simultaneously Replace Data Disk. In this case, the original data disk of the cloud computer remains unchanged. Snapshots created based on the original data disk can be used as expected.

If the desired image contains a data disk, you can select Simultaneously Replace Data Disk based on your business requirements.

If you want to simultaneously change the original data disk of the cloud computer, select Simultaneously Replace Data Disk. In this case, the original data disk of the cloud computer is replaced by the data disk contained in the desired image. Snapshots created based on the original data disk are automatically deleted.
If you do not want to change the original data disk of the cloud computer simultaneously, do not select Simultaneously Replace Data Disk. However, the data contained in the original data disk of the cloud computer is still cleared, and snapshots created based on the original data disk are automatically deleted.

Change the image of a cloud computer pool or pooled cloud computer

The data contained in the original data disk of the pooled cloud computer is retained, and snapshots created based on the original data disk can be used as expected.

The data contained in the data disks of pooled cloud computers for which you want to change their images are cleared, and the snapshots created for the data disks are automatically deleted.

Prerequisites

Snapshots are created to back up the data disks of the cloud computer whose image you want to change. For more information, see Use snapshots (public preview).
The cloud computer is in the Stopped state. For more information, see Start, stop, restart, or release a cloud computer.

Change the image of a cloud computer

Log on to the EDS console.
In the left-side navigation pane, choose Resources & Terminals > Cloud Computers.
In the upper-left corner of the top navigation bar, select a region.
On the Cloud Computers page, perform one of the following operations based on your business requirements:
- Change the image of a single cloud computer: Find the desired cloud computer, click the ⋮ icon in the Actions column, and then select Change Image.
- Change the images of multiple cloud computers: Select the desired cloud computers. In the lower part of the Cloud Computers page, choose More > Change Image.
In the Change Image panel, select the desired image in the Image section and click Confirm.
Note
- You can search for the desired image by type or ID.
- If you select a system image, specify a value for the OS Language parameter.
- If the selected image contains a data disk, and you want to simultaneously change the original data disk of the cloud computer, select Simultaneously Replace Data Disk.
In the message that appears, click Confirm.
During the image change process, the cloud computer enters the Changing state. After the cloud computer enters the Running state, the image change is complete. You can connect to the cloud computer to check whether the new image takes effect.

Change the image of a cloud computer pool

A cloud computer pool is a collection of cloud computers. When you change the image of the pool, you can specify a scope of cloud computers on which the new image takes effect.

In the left-side navigation pane, choose Resources & Terminals > Cloud Computer Pools.
In the upper-left corner of the top navigation bar, select a region.
On the Cloud Computer Pools page, perform one of the following operations based on your business requirements:
- A single cloud computer pool: Find the desired cloud computer pool, click the ⋮ icon in the Actions column, and then select Change Image.
- Multiple cloud computer pools: Select the desired cloud computer pools and click Change Image in the lower part of the page.
  Note
  You can change the images of cloud computer pools that are in the Running state.
In the Change Image panel, select the scope of pooled cloud computers whose images you want to change.
- If you set the Scope parameter to New Cloud Computer (default), new pooled cloud computers use the new image. This configuration does not affect existing pooled cloud computers. You can only select this option when specific pooled cloud computers are still running or no pooled cloud computers exist.
- If you set the Scope parameter to Existing and New Cloud Computer, the new image takes effect on both existing and new pooled cloud computers. This configuration is available only if all pooled cloud computers are in the Stopped state. If you select this option, you are about to replace the images of all existing and new pooled cloud computers with the new image.
In the Change Image panel, select the desired image and click Confirm.
Important
If you enable the user data roaming feature for the cloud computer pool whose image you want to change, the new image must meet the following requirements to ensure a successful image replacement:
- The operating system of the new image is Windows Server 2019. This is because only Windows Server 2019 cloud computers support the user data roaming feature.
- The new image must be a system image whose version is V1.6.0 or later, or the new image is created based on the system image. This is because cloud computers that are created by using such images support the data roaming feature.
In the message that appears, click Confirm.
After you change the image of the cloud computer pool, you can perform the following operations to check whether the new image is used: Go to the Cloud Computer Pools page, click the ID of the cloud computer pool, click the Basic Information tab on the pool details page, and then check whether the new image name applies.

Change the image of a pooled cloud computer

You can change the image of a specific pooled cloud computer in a cloud computer pool.

In the left-side navigation pane, choose Resources & Terminals > Cloud Computer Pools.
In the upper-left corner of the top navigation bar, select a region.
On the Cloud Computer Pools page, select the desired cloud computer pool and click the ID of the cloud computer pool.
On the Cloud Computer Information tab, find the desired pooled cloud computer, click the ⋮ icon in the Actions column, and then select Change Image.
In the Change Image panel, select the desired image in the Image section and click Confirm.
Note
If you select a system image, specify a value for the OS Language parameter.
In the message that appears, click Confirm.
During the image change process, the cloud computer enters the Changing state. After the cloud computer enters the Running state, the image change is complete. You can connect to the cloud computer to check whether the new image takes effect.