Hello, I am replacing both HDDs in my Cavalry Raid 1 array. Currently they are each 1 TB 16 mb Cache. (iTunes library) I am planning on populating the new HDDs from a WD MY BOOK Essential Edition that I have as an extra back-up. It is also 1 TB with 16 mb Cache. Here is the question - what if I purchase new 1 TB HDDs for the Cavalry with 32 or 64 mb Cache. Will the Raid still work properly with the downloaded music from the 16 mb HDD?