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What's so important about the SPC-1 benchmark?

I just read an article "DataCore makes iSCSI rock", in which Randy Kerns was talking about SPC-1 iSCSI results. Why are they important? Why is there such a difference in SPC-1 iSCSI compared to peak I/O numbers on the same platform?
The SPC-1 benchmark creates a real-world database workload that was arrived at by using traces from many customer environments. It is a very controlled and repeatable test that is the best available for comparing performance from one product to another for that type of usage. The peak numbers are just what a storage device can do from cache and have no bearing on any real world activity. Basically, they are pretty useless. To learn more, go to www.storageperformance.org.
This was last published in January 2005

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