Whitepaper: Real World Performance

The Importance of Variable Block Size in an All-Flash Array

Flash providers report on 4KB (or 8KB at best) block I/O in order to demonstrate performance. Why? Because that’s the block size they support, and by definition the smaller the block size I/O the higher the IOPS for a given bandwidth – and most of these providers have very low bandwidth to begin with, so they can only achieve “flashy” IOPS numbers by using very small block sizes. Learn about the importance of variable block sizes in an all-flash array in this white paper.

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