Benchmarking data storage or transfer speeds can seem straightforward, at least in theory. Assemble a group of test files on your PC; store, copy, upload or download them, and measure how long this all takes. Easy, right?
Well, not necessarily. Compression could be an issue. You might measure how long it takes to save a bunch of files to an SSD, for instance, but if the drive uses compression – as many do – then the speed you see will vary according to your test data.
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