The Jbod is a great product. Its easy to use you just open the bay doors and slide in the oem drives with no need for cabling, The jbod needs no software to be installed unless you want to use the backup software. Which is supplied. (I did not test this)
My current configuration is using 2
Western Digital Caviar 2TB SATAII 64MB Cache 3.5-inch Green Internal Hard Drive OEM with Windows 7.
The drives appear on the computer via one usb cable as separated drives.(so if your short on usb connections you should definitely purchase this)
I am currently using the drives as data storage backup for video and photos. Accessing is as fast as other externals such as the Toshiba 3.5 inch and Western Digital Mybook and the Samsung Story external drives.
The Jbod has a built in fan which is fairly quite on the low setting (it is a bit noisy on the highest settings), you can change the settings manually by a switch on the back.
I have mine turned off as the drives still remains cool under heavy usage.
This is a great unit to purchase if you want to access information on another older or faulty computer, as you can just take out the drive and slide it in to the jbod to recover and access the information easily.
In conclusion i would highly recommend this product for those using external hard drives as this is a cheaper alternative. The use of only one usb cable to access 2 drives is another highly recommended reason to purchase this. The only real negative for me is that the doors on the front are a bit fragile so being too rough could snap them.
(i'm looking to test this with two 3tb oem hard drives when I can get hold of them. I'll update my review to let you know if the 6tb can be accessed)