[Winder]

Western Digital Ships 12TB WD Gold Hard Drives To Meet Growing Capacity Requirements Of Big Data Applications | Western Digital (WD)

Those 36MP K-1 files really aren't that large relative to modern storage solutions.

[Digitalis]

Every bit adds up though. I have had to invest in a 3X5.25 hard drive bay that can hold five drives as all the drive slots in my existing chassis are occupied. When I get the new drives* which gives me a total capacity in the ballpark of of 76 TB.

*I'm presently using 6TB WD Black drives, though these new gold drives: The promise of improved reliability makes these drives attractive to me, but whether the new features make any tangible difference to longevity remains to be seen.

[LensBeginner]

In my country 4TB HDDs still have the best price per TB.
Of course the fact that one may have a NAS with a limited number of bays might speak in favor of larger sizes.