Hello Nowotarsky34, thanks for contacting us through the Intel Communities.
I would like to tell you that this is totally expected and not to worry about it.
On the following thread you will be able to confirm that information. https://communities.intel.com/message/226324#226324
Just in case, I checked one of our system with RAID and it is showing the same.
Thank you Silvia!
You are more than welcome.