Target Amazon Resource Name (ARN), e.g., arn:aws:storagegateway:us-east-1:123456789012:gateway/sgw-12345678/target/iqn.1997-05.com.amazon:TargetName.
arn:aws:storagegateway:us-east-1:123456789012:gateway/sgw-12345678/target/iqn.1997-05.com.amazon:TargetName