In order to submit dpx files to the DI studios, some sections that I was rendering exceeded 1TB, so I ended up buying the 1.5TB Seagate Barracuda and tried to copy the files with 1.12TB total.
I went to sleep after I initiated the copying process, I came back to my studio 6 hours later, but still copying the last 100GB or so. SATA drives generally gets really slow upon end part of the drive, but this is significantly slow.
It's probably going around 8MB/sec with eSATA connection.
So, be warned that even you can get more storage space with very good price with 1.5TB drive, last part of this drive is not practical to use.