Quote:
A *lot* of people seem to prefer RAID 1+0 .... Or the other way around (0+1)

Technically, RAID 1+0 (more commonly referred to as "RAID 10"), is superior to RAID 0+1 due to the number of drives that can be lost and the RAID still remain active, but, in the case of just four drives total (which is the minimum setup for these types of RAID), it degenerates to being the same.
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Bitt Faulk