POST /v1.0/1234/instances HTTP/1.1
Host: ord.databases.api.rackspacecloud.com
Content-Type: application/json
Accept: application/xml
X-Auth-Token: eaaafd18-0fed-4b3a-81b4-663c99ec1cbb

{
    "instance": {
        "name": "'my_instance_name'",
        "flavorRef": "https://ord.databases.api.rackspacecloud.com/v1.0/1234/flavors/1",
        "volume": {
            "size": "2"
        }
    }
}
