There can be no guarantee for HDD. It might work for 6-7 yrs. (like me) without any problems or it might fail 2 times in 3 yrs. (like 2 of my friends). This happened with both Samsung and Seagate HDDs. So if you want to have at least guarantee for the data you want to archive go for DVDs.
The ones of Verbatim are really good ones for good data backup. Another one will be Imation.
The ones of Verbatim are really good ones for good data backup. Another one will be Imation.