Microcenter.com has the WD 2GB green drive for $249.99 I don't understand why eSATA or internal should make any difference. I run my desk computer off of an eSATA. I run multiple OS's and to swap I physically swap the drive. The eSATA drive physically plugs into the same port as an internal drive. There is no difference between internal and external. The bios doesn't know the difference. Is it not the same way on the HR*? Doesn't the eSATA port just connect to an internal SATA port? On boot up the HR software should select the active drive and after that it should be the same.