That result is partially cached. Iometer with a very large test file will not show those numbers. You can see from the latency that the real QD1 random reads are around 32MB/s for that config of yours. Edit: you even show yourself that the real QD1 RR number is 31MB/s later in the review...Originally Posted by Computurd
RAID controllers are not able to increase 4k QD1 random read performance above what the SSDs themselves are capable of because it is impossible since we are just talking about raw latency here; i.e. the time it takes your devices to respond to a small block read command. The absolute best a controller can do is not add any overhead on top of that. It can not make any device respond faster than they are capable of no matter the kinds of voodoo magic you believe in
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