I bought my hard drive last year online at Rs 4200 from amazon. That is 1 TB hardrive of western digital.i used it from one yr now it is very good in performance .1 TB Stands for 1 Tera Byte that means it gives u around 1024 GB data but after deduction we only got around 956 GB which is sufficient for saving all our personal data along with songs, movies, games etc.As I told earlier it is very effective because it transfer speed of data is very good .as I personally experience its transfer speed is around 15-20 MB per second and also depending on the data.but overall its good for us.At last I say it is worth spending a money on WD 1 TB external hard drive.i also attached some pics of my Hard Drive.
Thanku