I have been having significant problems trying to copy files to a USB drive (G0-Flex 1.5 tb) No matter what I use to try to copy the files (python code, Windows copy and paste or Drobo Copy utility) I ultimately get a failure. The failure is always some indication that the device is not ready or able to be written to. I am pretty sure the problem is that the drive is losing its connection. I have done everything I can find so far including setting the USB Root hub to never turn off the power, I updated some usb drivers etc. I have found references to this problem primarily with Win7-64 bit.

I have also had USB connection problems with other devices- we kept losing a connection to our Bravo Disc Publisher when we went to Win7 and finally bought a newer model and have not had problems since.

Any pointers about diagnosing and or understanding the problem would be appreciated.