Storage
LaCie pumps more data down USB 3 link
LaCie is prepping dual drive RAIDed storage box delivering up to 275MB/sec across its USB 3.0 link. The product is the 2Big USB 3.0, with two hard drives, a maximum capacity of 4TB - ergo 2 X 2TB 3.5-inch hard SATA drives - and either RAID 0 or RAID 1 configurations. It uses a dual USB 3.0 SATA and RAID bridge controller from …
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So...
not really 4TB is it?
More like 3.72TB before filesystem overhead.
USB 3.0 is not the bottleneck.
I should make it clear. USB 3.0 is not a bottleneck here; it's the speed at which the drives can pump data into the USB 3.0 pipe, which is why multi-drive USB external storage arrays are a good thing in terms of bumping up deliverable I/O speed through the wire.
Chris.
There is no file system overhead.
There is no significant capacity lost due to overhead.
They are using different units of measurement.
Hard drive manufacturers consider a TB to be one trillion bytes.
Most operating systems report a TB to be 1024^4 bytes.
Its like the rope manufacturers are selling rope by the foot. But you are measuring it in meters, dividing it by 3 and wondering where the missing rope went.
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