Seagate Enterprise Capacity 3.5 V.3 4TB SATA III HDD Review @ NikKTech
 

If we exclude the unfortunate floods that took place in Thailand roughly a year ago (and forced several factories to cease HDD manufacturing and shipping) HDD prices normally get serious cuts each day that goes by (as do SSD prices) and so currently even the highest capacity 4TB models retail at such prices that can be easily purchased by casual users and gamers around the world. That however mostly stands with entry level models that offer exactly what most users want and that's a good price to capacity ratio without however sacrificing performance. On the other hand however professionals and enterprise users want the best money can buy not only in terms of performance and capacity but also in terms of durability under extreme conditions and that's where enterprise class HDDs like the latest Seagate Enterprise Capacity 3.5 V.3 (former Constellation ES.3) 4TB SATA III come in.

http://www.nikktech.com/main/article...b-sata-iii-hdd