USB Flash Drive RAIND Array Experiment

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TheUltimateMacUser's picture
Joined: Jan 28 2004
Posts: 615

I realise it's been done, but... the question is, can it be useful?

Ok... For this experiment, i used 3 identical PNY 2 gig USB flash drives.

To start of with a baseline, i ran an XBench disk test on a single, freshly formatted drive:

Ok, that being done, lets plug in all the drives. I plugged the three drives into a USB hub, and fired up Disk Utility.


Click for high rez

I set the array up to use all three drives as one big drive. This should give an increased read & write time. ...In theory, at least.


All 3 drives mounted separately

The newly formed array:

Running XBench again, on the array:

The XBench tests, along with my highly unscientific test of copying a large image file to a single drive, and to the array indicate a significant speed increase when the 3 drives are RAID'd together.

Now, to answer the question i posed at the beginning of this post. Can it be useful? Well, that's questionable... but, this was fun!

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TheUltimateMacUser's picture
Joined: Jan 28 2004
Posts: 615
Continued...

Looking at the above results, you may notice a decrease in speed of the RAID array. This is due to it being plugged into a USB hub. With each drive plugged into it's own port, directly into my G4, there is an overall increase in speed:

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