One of the finest tools available to measure storage performance is ATTO. I love it to death as it is so reliable and produces such accurate results. The great thing about ATTO is that we can test with predefined block sizes. So we can test with a 32MB sequence of 4KB files, yet also 32MB in 1MB files. This gives us an excellent scope of overall performance with small and large files.
But let's have a peek at actual read performance. I threw in a couple of comparable SSDs and a Western digital Velociraptor HDD.
The most important and difficult task for any storage unit is writing really small files fast, so have a look at that with this WRITE test. We scale 4KB block sizes to 1024KB block sizes in bursts of 256MB with a queue depth of 10 and then measure how fast the storage device is dealing with them.
The one thing this test tells us is that SATA3 is already getting outdated and is becoming a bottleneck alright.
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