I've always been told that drives in the same enclosure should all spin at the same RPM. Exactly because of the issue in that video: if there are different RPM

I've always been told that drives in the same enclosure should all spin at the same RPM. Exactly because of the issue in that video: if there are different RPMs they shake each other and cause problems. I've never actually tested if this is true, but I've always made sure to honor it. If in fact it is true, that this lie by Western digital is even worse.