2 Replies Latest reply on Jun 23, 2020 1:05 AM by mithrandir1030

    vSAN encryption - performance impact

    mithrandir1030 Novice

      I found below document which explains a little about performance impact when vSAN encryption is enabled.

       

      The Code Keepers: vSAN Native Encryption - Part 1 - Virtual Blocks

      -> There is minimal impact to CPU cycles while we encrypt data. This is fundamental to how encryption has been designed for vSAN. For most workloads (with AES-NI enabled) we expect somewhere between 5-15% CPU penalty and no performance overhead. This overhead is representative of running vSAN with dedupe and compression turned on.

       

      However, I am a little confused  that what does 5-15% CPU penalty mean? Means CPU speed will become slower at 5-15%?

      And what does "This overhead is representative of running vSAN with dedupe and compression turned on" mean? When the dedupe and compression is enabled, there is no performance overhead ?

       

      It will be appreciated if anyone could explain more detail.