I have a 4.3 GB file made from Adobe Premiere. Exported to D: hard drive. I have another internal 200GB 8MB Cache Maxtor drive and an external 160GB 8MB Cache Maxtor drive via firewire for back up purpose. When I copy the file to the external drive, it only takes about 4-5 minutes. However, when I try to copy the same file onto the internal 200GB drive, it will take twice as long. Any thoughts why this would be? Drives are both NTFS and DMA enabled.