<!-- Code generated from the comments of the DiskConfig struct in builder/vsphere/iso/step_create.go; DO NOT EDIT MANUALLY -->
Defines the disk storage for a VM.

Example that will create a 15GB and a 20GB disk on the VM. The second disk will be thin provisioned:

```json
  "storage": [
    {
      "disk_size": 15000,
    },
    {
      "disk_size": 20000,
      "disk_thin_provisioned": true
    }
  ],
```
