> most NAS purchasers know that hard drives are a commodity/standardized and won't pay a premium for ... no benefit. Also, some will deliberately mix drives fr

> most NAS purchasers know that hard drives are a commodity/standardized and won't pay a premium for ... no benefit. Also, some will deliberately mix drives from various manufacturers to reduce exposure to potential “bad batch” problems where multiple drives fail in a short space of time (possibly extra failures while rebuilding an array after the first failure, rendering the whole array untrustworthy or entirely broken). This is not possible if you can only purchase from one manufacturer.