You can only depend on the drive manufacturer's testing and track record.
If your data is very important and the system must not fail, then you should use a RAID array of 4 drives with data redundancy, if one of the drives fails, you can replace it without losing any data.
Reads and writes are also faster on such a system, they are often used in video production systems(not too many aplications will work a drive harder than reading and writing video data) Since it is much less likely that all the drives will fail at once, unless they are struck by lightening without a power conditioner/ lightening protector, this provides a much more fail-safe system.