As mentioned previously in the review, security is an ever growing concern and encryption is a great step to achieve this. As such I will be including a comparison between an encrypted drive and a normal single drive for a basic comparison and to show if and how it will impact on your performance.
Our benchmarks are real-world tests and will variate a little. We see above that the encryption has some influence on the performance but the encrypted benchmark still shows some great speeds. I doubt anyone will feel the difference during normal workloads on the NAS.