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Why does my SSD not issue 1MB IO’s?

n0derunner

Why do we tend to use 1MB IO sizes for throughput benchmarking? To achieve the maximum throughput on a storage device, we will usually use a large IO size to maximize the amount of data is transferred per IO request. For historical reasons, many storage testers will use a 1MB IO size for sequential testing. First things First.

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SQL Server I/O Basics Chapter #2

SQL Server According to Bob

​​ The storage ​​ space that is required ​​ for the sparse file is only that of the actual bytes written to the file and not the ​​ maximum ​​ file ​​ size.

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