{
         "Type" : "AWS::EC2::Instance",
         "Properties" : {
            "ImageId" : "ami-79fd7eee",
            "KeyName" : "testkey",
            "BlockDeviceMappings" : [
               {
                  "DeviceName" : "/dev/sdm",
                  "Ebs" : {
                     "VolumeType" : "io1",
                     "Iops" : "200",
                     "DeleteOnTermination" : "false",
                     "VolumeSize" : "20"
                  }
               },
               {
                  "DeviceName" : "/dev/sdk",
                  "NoDevice" : {}
               }
            ]
         }
}