I bought this last year during a flash sale. After using it daily and have had great satisfaction, I quickly became disillusioned. Lately the disk was set to make an abnormal noise while it had not fallen or remained the same in the sun ... Given the impossibility to read the contents of the disc, Window 7 then asked me formatting.
Anyway after several attempts, I managed to recover 70% of the content before the disc plant for good. I think it is agisait a mechanical problem but it's scary. Certainly there is the SSD but it is very expensive ... I for one do not trust external SD !!!