The following tables describe the values you need to set in the schema.
The name of the snapshot that is being created. The name can't be changed after the snapshot is created. Supported characters for the name are a-z, A-Z, 0-9 and _. The max name length is 80 characters.
Disk source information. CreationData information cannot be changed after the disk has been created. - CreationData object
If creationData.createOption is Empty, this field is mandatory and it indicates the size of the VHD to create. If this field is present for updates or creation with other options, it indicates a resize. Resizes are only allowed if the disk is not attached to a running VM, and can only increase the disk's size.
If createOption is Import, this is the URI of a blob to be imported into a managed disk.
If createOption is Copy, this is the ARM id of the source snapshot or disk.
Set this flag to true and provide DiskEncryptionKey and optional KeyEncryptionKey to enable encryption. Set this flag to false and remove DiskEncryptionKey and KeyEncryptionKey to disable encryption. If EncryptionSettings is null in the request object, the existing settings remain unchanged.