I have problems with my old enclosure and want to be sure:
* can I fully use a hard disk with 3TB? or is there a limit?
* Will 3TB work even if I only have USB2 on the computer?

Question

I have problems with my old enclosure and want to be sure:
* can I fully use a hard disk with 3TB? or is there a limit?
* Will 3TB work even if I only have USB2 on the computer?

Accepted Answer

This enclosure (like most USB 3 devices) is downward compatible with USB 2.0.
In addition, the internal electronics of such enclosures ensure that the hard drive responds. 
So it shouldn't matter whether you use USB 2.0 or USB 3.0 on the host device, i.e. your computer (apart from the speed, of course).

Regarding the maximum supported hard drive capacity, the manufacturer (Raidsonic) simply says: "Unlimited", so your 3TB hard drive should not be a problem for this enclosure either.

Today's devices usually use a 64-bit LBA. According to the specification, the maximum supported hard disk or memory size is 8ZB (Zettabyte), which corresponds to 7,000,000,000 terrabytes. 

I think that this will still be sufficient for hard disks that will be developed in the near future ;-)

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Question about Icy Box Ib-373u3

I have problems with my old enclosure and want to be sure: * can I fully use a hard disk with 3TB? or is there a limit? * Will 3TB work even if I only have USB2 on the computer?