Conclusion

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For our tests we created a Software RAID0 under Windows 7 and afterwards we tested the volume with iozone. At this point we had to find out that LaCie uses SATA II instead of faster SATA III Solid State Drives for their Little Big Disk. This really is a pity because you only get half of what could be possible with an external thunderbolt storage device. Basically the Little Big Disk with its two 120 Gigabyte SSDs isn't fast, but it's kind of depressive when you just spent about 700 Swiss Francs (est. 583 Euros) on an external high-performance drive and you then notice that you get technology from 2010. We're really hoping that LaCie is going to bring another version of the Little Big Disk with two SATA III drives. We would love to see the Thunderbolt interface maxed out at more then 1 Gigabyte per second but instead you get 424 Megabyte per second concerning sequential reads and 324 Megabyte per second when it comes to sequential writes.
The LaCie Little Big Disk 240 receives 2.5 out of five stars.