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.
ATTO Write performance
The most important and difficult task for any storage unit is ... writing really small files fast, so let's start off there and 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 4 and then measure how fast the storage device is dealing with them. The storage units we used:
WD1500HLFS VelociRaptor in cyan
Corsair X128 (MLC) Indilinx based in green
OCZ Vertex 2 100GB (MLC) SandForce SF1200 in yellow
OCZ OCZ RevoDrive (MLC) 120GB SIS Raid / Sandforce SF1200 x2 in red
We recently added the latest revision of the Western Digital WD1500HLFS VelociRaptor to our test suite, it is considered amongst the fastest and most expensive 10k RPM HDD your money can get you. It's read/write performance is unprecedently good for a traditional/mechanical HDD of course.
Then in green an Indilix product for comparison, the Coresair X128. Then the OCZ Vertex 2 in yellow, MLC based SSD nearing ~250MB/sec write performance.
Then in red the RevoDrive takes off with near blasting performance ! Look at the test and compare it to the a traditional HDD like the Velociraptor, that is astonishingly good.
Remember, this was just the write performance !
ATTO Read performance
The previous test was write performance, but let's have a peek at read performance. The SandForce-1200 controller based SSDs kicks ass and definitely take a lead in this particular benchmark.
The SSDs are all really fast, but that's 282 MB/sec read performance when it's peaking. And again look at the tremendous increase in small file operation performance. The OCZ RevoDrive actually manages to push near 550 MB/sec when peaking.
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