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Originally Posted by Wile E
BTA is correct. IOPS can be used to measure speeds at any byte size, just like MB/S. You aren't factoring in file size at all. IOPS does not mean random access, or exclusively small file access.
Measure both IOPS and MB/s at the same file size, and you'll see that they correspond perfectly.
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BazookaJoe is correct. Sorry.
IOPS are not primarily or ordinarily used to measure transfer speeds. Consider the IOPS and transfer rates of HDD's and then consider the difference between normal HDD's and SSD's.
Yes, IOPS -DO- factor into the final end measurement of transfer speeds but that is not what BazookaJoe is talking about. It's a factor, not the end result. Being ignorant enough not to understand that a factor may in fact affect another area of performance or application other than the minimum/average/maximum/mean transfer rates is no excuse. Broaden your horizons.
I think you had both better go back to Wikipedia or Google and learn what IOPS actually are and what the significance of the difference between normal HDD's and SSD's are and just what this means to the end-user.