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    Image Replication

    Last updated: 2024-12-03 14:54:29
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      Overview

      Features

      Image replication offers two options, Cross-region replication of custom images and Intra-region replication of shared images.
      Type
      Use Case
      Description
      Cross-region replication of custom image
      Deploy the same CVM instance across regions quickly.
      Copy a custom image to another region, and use the created copy to create a CVM in the new region.
      Intra-region replication of shared image
      Make a copy of a shared image and use it as a custom image.
      The created custom image is not subject to the limits of shared images.

      Limits

      Custom images can be replicated across regions, and shared images support intra-region replication.
      Due to the data security limitations on financial zone, it supports image duplication within a financial zone, but not supports image duplication cross financial zone and non-financial zone.
      Image replication is free of charge. But you need to pay for snapshot service for store the copied custom images.
      Image replication takes 10 to 30 minutes.
      Cross-region replication is not available for full images.

      Methods

      Cross-region Replication of Custom Images

      Console
      API
      1. Log in to the CVM console.
      2. In the left sidebar, click Images to enter the image management page.
      3. Select the region where the original image you want to copy resides, and click the Custom image tab. For example, select Guangzhou region.
      
      
      4. Find the instance whose image needs to be copied, click More > Cross-region replication.
      5. In the pop-up window, select the regions where the image will be copied to and click OK. After the copying is completed, the image list in the destination regions will display images with the same name and different IDs.
      6. Switch to a destination region. Select the copied image in the image list, and click Create instance to create the same CVM instance.
      You can use the SyncImages API to copy an image. For more information, see SyncImages.

      Intra-region Replication of Shared Images

      Console
      API
      1. Log in to the CVM console.
      2. In the left sidebar, click Images to enter the image management page.
      3. Select the region of the source image, and click the Shared image tab. For example, select Guangzhou region.
      
      
      4. Find the instance whose image needs to be copied, click More > Intra-region replication.
      5. In the pop-up window, select the regions where the image will be copied to and click OK. After the copying is completed, the image list in the destination regions will display images with the same name and different IDs.
      6. Switch to the Custom image tab. Select the successfully copied image, and click Create instance to create the same CVM instance. The copied image has features like other custom images.
      You can use the SyncImages API to copy an image. For more information, see SyncImages.
      
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