The data is close enough that it sounds like the sets share a good portion of common data, but that there are exclusive items in one or both sets. I could easi

The data is close enough that it sounds like the sets share a good portion of common data, but that there are exclusive items in one or both sets. I could easily see one set based on a different time, or another that missed a category of drives (EG one also counts drives from testing / non-production units).