[H] ESATA for the first time

[Winterlight]

I just purchased a 2TB Fantom Green drive with USB2 & ESATA 
http://www.fantomdrives.com/products/greendrive.htm. I have not tried 
the USB2 as I am trying to use the ESATA. I am using a new 1 meter 
ESATA cable plugged into a ASUS  Maximus II formula motherboard ESATA 
port. I set this up when the power was off. I then powered up the PC 
and the Fantom drive appears correctly in Windows 7 PRO. I attempted 
to copy a number of folders with around 100GB of video to the drive 
but after about 10 percent copied the Fantom drive disappeared and I 
was forced to abort the copy.

I shut down, let it sit powered off for a while and then started 
things back up. The Fantom drive was right where it should be but no 
folders or files showed on the drive. I copied a few small folders 
with no problems. Then I let it sit like that overnight and in the 
morning everything was as it should be. So I attempted to copy a 
folder with 418 GB of video in it to the ESATA drive. After a short 
time the Fantom drive disappeared and I had a message that around 15 
percent of  the folder had been copied and  the drive was no longer 
available... again I had to abort. The drive is still not showing but 
I assume it will appear after a shutdown.

Having no experience with ESATA I am unsure of where the problem 
lies,... the ESATA port on the ASUS board, Windows 7, or the new Fantom drive?