Is this normal? Over a long period of time, my file transfer/copying speed slows down. For example, at the beginning it's 80-90 mb/s. Then like 5-10 mins later it goes to 30 mb/s or lower. I notice this for big files, not so much with smaller files.
I tried with my internal hard drive and the same hard drive in a enclosure via esata.
This is annoying especially you need to transfer over 100 GBs of data...
I notices this when copying/transferring files from my internal Seagate drive to my external WD drive and vice versa.