[104] pry(main)> parsed['Reservations'][0]['Instances'][0]['BlockDeviceMappings']
=> [{"DeviceName"=>"/dev/sda",
  "Ebs"=>
   {"Status"=>"attached",
    "DeleteOnTermination"=>true,
    "VolumeId"=>"vol-44068e41",
    "AttachTime"=>"2014-08-01T03:48:51.000Z"}},
 {"DeviceName"=>"/dev/sdb",
  "Ebs"=>
   {"Status"=>"attached",
    "DeleteOnTermination"=>true,
    "VolumeId"=>"vol-36068e33",
    "AttachTime"=>"2014-08-01T03:48:51.000Z"}}]