How Many Tenants Can I Share an Image with at Most?

A system disk image or data disk image can be shared with a maximum of 128 tenants, and a full-ECS image can be shared with a maximum of 10 tenants.

How Many Shared Images Can I Obtain at Most?

There is no limit.

Can I Share Images Between My Accounts of the China Site and International Site?

Yes. You can share images between your accounts of the China and international sites, but only in regions that are available at both sites. For example, you cannot share images in the CN North-Beijing4 region of the China site with your account of the international site which does not have this region.

Do Shared Images Affect My Private Image Quota?

No.

I Share an Image to an Account But the Account Does Not Accept or Reject the Image? Will My Image Sharing Quota Be Consumed?

No.

Where Can I View Images Shared with Me?

Switch to the region where the shared image is located, choose Service List > Computing > Image Management Service > Images Shared with Me.

If the image is not accepted, a red dot is displayed on the Images Shared with Me tab page (as shown in Figure 1) and a message is displayed, asking you whether to accept the shared image. After the image is accepted, it is displayed in list on the Images Shared with Me tab page.

Figure 1 Images Shared with Me

If I Want to Share a System Disk Image to Another Account, Should the Account Purchase an ECS in Advance?

No. The account can use the shared image to apply for ECSs.

Is There Any Restriction on the Region When I Create ECSs Using a Shared Image?

Yes. You can only create ECSs in the same region as the shared image.

Can I Share Accepted Shared Images with Other Tenants?

You cannot directly share such images with other tenants. If you do need to do so, you can replicate the shared images to private images and share the private images.

Can I Use an Image I Have Shared with Others to Create an ECS?

Yes. After sharing an image with other tenants, you can still use the image to create an ECS and use the created ECS to create a private image.

What Are the Risks of Creating ECSs Using a Shared Image?

The image owner can view, stop sharing, or delete the image at any time. After the shared image is deleted, you will be unable to reinstall the OSs of the ECSs created from the shared image or create ECSs with the same configurations using the shared image.

HUAWEI CLOUD does not ensure the integrity and security of the images shared by other accounts. To prevent risks, you are advised to choose images shared by trusted accounts.

What Are the Risks of Sharing Images with Other Tenants?

Data, files, and software may be disclosed. Before sharing images, you must delete sensitive data and important files. The image recipient can use the shared image to create ECSs and use the created ECSs to create private images. If the created private images are shared with other tenants, data is disclosed in a wider range.

How Do I Share an Image with an IAM User?

In the Share Image dialog box, add the account name of the IAM user. For details, see Sharing Specified Images. After the image is shared, log in to the IAM management console and choose Image Management Service > Images Shared with Me to view the shared image to be accepted. That is, after an image is shared with an IAM account, all IAM users under the account can receive the shared image.

How Do I Replicate an Image Between Projects in a Region?

Cross-region image replication allows you to replicate images between regions. Image sharing allows you to replicate images between projects in the same region.

In the Share Image dialog box, enter your account name, select the target project, and click Add, as instructed in Sharing Specified Images. After the image is shared, switch to the target project. On the Image Management Service > Images Shared with Me page, you can view the shared image to be accepted.

How Do I Share an Image Across Regions?

To share an image across regions, you can use either of the following methods:

• Replicate the image to the destination region and then share it.
• Share the image and then replicate it to the destination region.

For example, if you want to share a private image in the CN North-Beijing4 region to the CN South-Guangzhou region with another account, use either of the following methods:

Method 1:

1. Replicate the private image from the CN North-Beijing4 region to the CN South-Guangzhou region. In the CN South-Guangzhou region, the image is named copy_image.

   For details, see Replicating Images Across Regions.

2. Share copy_image with the target account.

   For details, see Sharing Specified Images.

Method 2:

1. Share the private image with the target account in the CN North-Beijing4 region.

   For details, see Sharing Specified Images.

2. After accepting the shared image, the account replicates it as copy_image.

   For details, see Replicating a Shared Image.

3. The account replicates copy_image from the CN North-Beijing4 region to the CN South-Guangzhou region.

   For details, see Replicating Images Across Regions.

Can I Specify a Region or an AZ for Sharing an Image?

No. When sharing an image, you can specify only an account name and cannot specify a region or an AZ. That is, an image can be shared only in the same region. In addition, an image can be used in any AZ in a region.

Can the Data of a Data Disk Image Shared by Another Account Be Restored to My Existing Data Disks?

No. You need to apply for a new data disk for restoring the data of the data disk image shared by another account. You can restore the data by following the instructions provided in Can I Import Data from a Data Disk Image to a Data Disk?.

Can I Use the ECS System Disk Image of an Account to Restore Another Account's HECS System Disk?

Yes.

1. Share the ECS system disk image with the target account.

   For details, see Sharing Specified Images.

2. The account accepts the image and replicates it as a private image.

   For details, see Replicating a Shared Image.

3. The account uses the private image to change the HECS OS. When changing the OS, the account needs to select the private image in 2 on the Private Images tab page.

   For details, see Changing the OS.

Can I Share My ECS and Its EIP with Another Account?

You can share an ECS through full-ECS image sharing but cannot share the EIP.

How Can I Use a Rejected Image?

If you have rejected an image shared by another tenant, but now want to use it, two methods are available:

• Method 1

  Ask the image owner to add you to the tenants the image is shared with. For details, see Adding Tenants Who Can Use Shared Images.

• Method 2

  Accept the rejected image again. For details, see Accepting Rejected Images.