If you're worried about drive failures you could go with Solid State Drives which have a much lower failure rate. Down side is they are not as cheap as a HDD. Samsung 850 EVO is a really nice SSD, I run 2 of these in RAID and no problems in 3 years of owning them. The 1TB Samsung 850 EVO is $318 on newegg.com. Speeds are much faster on an SSD so transferring a large amount of data after it's moved to the SSD should never be a problem after. I have a 4TB HDD Drive that I use for storage that also has never failed on me in it's 4 year service. If money isn't a problem SSD is the way to go but if money is an issue an HDD is a good option.