In article , Paul
wrote:

The reason for mixing up the drive brands, is so failures
don't correlate (precisely). If you used all Samsung drives,
maybe they all wear out on the same day.

it's best to *not* mix brands (and may not even work).

however, it *is* a good idea to get the same drives from a different
manufacturing *batch*.

don't buy the drives at the same time from the same vendor. buy one
each from different vendors and/or different times. unfortunately, it
might be more expensive that way.

and raid doesn't answer the original question about ssds.