<!-- Code generated from the comments of the AlicloudDiskDevices struct in builder/alicloud/ecs/image_config.go; DO NOT EDIT MANUALLY -->

- `system_disk_mapping` (AlicloudDiskDevice) - Image disk mapping for system
  disk.
  -   `disk_category` (string) - Category of the system disk. Optional values
      are:
          -   `cloud` - general cloud disk
          -   `cloud_efficiency` - efficiency cloud disk
          -   `cloud_ssd` - cloud SSD
  
       For phased-out instance types and non-I/O optimized instances, the
       default value is cloud. Otherwise, the default value is
       cloud\_efficiency.
  
  -   `disk_description` (string) - The value of disk description is blank by
      default. \[2, 256\] characters. The disk description will appear on the
      console. It cannot begin with `http://` or `https://`.
  
  -   `disk_name` (string) - The value of disk name is blank by default. \[2,
      128\] English or Chinese characters, must begin with an
      uppercase/lowercase letter or Chinese character. Can contain numbers,
      `.`, `_` and `-`. The disk name will appear on the console. It cannot
      begin with `http://` or `https://`.
  
  -   `disk_size` (number) - Size of the system disk, measured in GiB. Value
      range: \[20, 500\]. The specified value must be equal to or greater
      than max{20, ImageSize}. Default value: max{40, ImageSize}.

- `image_disk_mappings` ([]AlicloudDiskDevice) - Add one or more data
  disks to the image.
  
  -   `disk_category` (string) - Category of the data disk. Optional values
      are:
      -   `cloud` - general cloud disk
      -   `cloud_efficiency` - efficiency cloud disk
      -   `cloud_ssd` - cloud SSD
  
      Default value: cloud.
  
  -   `disk_delete_with_instance` (boolean) - Whether or not the disk is
      released along with the instance:
      -   True indicates that when the instance is released, this disk will
          be released with it
      -   False indicates that when the instance is released, this disk will
          be retained.
  -   `disk_description` (string) - The value of disk description is blank by
      default. \[2, 256\] characters. The disk description will appear on the
      console. It cannot begin with `http://` or `https://`.
  
  -   `disk_device` (string) - Device information of the related instance:
      such as `/dev/xvdb` It is null unless the Status is In\_use.
  
  -   `disk_name` (string) - The value of disk name is blank by default. \[2,
      128\] English or Chinese characters, must begin with an
      uppercase/lowercase letter or Chinese character. Can contain numbers,
      `.`, `_` and `-`. The disk name will appear on the console. It cannot
      begin with `http://` or `https://`.
  
  -   `disk_size` (number) - Size of the data disk, in GB, values range:
      -   `cloud` - 5 \~ 2000
      -   `cloud_efficiency` - 20 \~ 2048
      -   `cloud_ssd` - 20 \~ 2048
  
      The value should be equal to or greater than the size of the specific
      SnapshotId.
  
  -   `disk_snapshot_id` (string) - Snapshots are used to create the data
      disk After this parameter is specified, Size is ignored. The actual
      size of the created disk is the size of the specified snapshot.
  
      Snapshots from on or before July 15, 2013 cannot be used to create a
      disk.
  
  -   `disk_encrypted` (boolean) - Whether or not to encrypt the data disk.
      If this option is set to true, the data disk will be encryped and corresponding snapshot in the target image will also be encrypted. By
      default, if this is an extra data disk, Packer will not encrypt the
      data disk. Otherwise, Packer will keep the encryption setting to what
      it was in the source image. Please refer to Introduction of [ECS disk encryption](https://www.alibabacloud.com/help/doc-detail/59643.htm)
      for more details.
