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Are those Metric terabytes (1000^4), or in freedom units (1024^4)?

Should be tebibytes (TiB) for the latter, though binary prefixes don't have much adoption outside of the software world.

http://www.physics.nist.gov/cuu/Units/binary.html

Or inside of the software world, for that matter.

Huh? 1024^4 is how Windows defines a terabyte, accordingly that's what most people think a terabyte is. OS X was the first OS to switch to 1000^4 with Snow Leopard (2009). Different Linux system tools use either standard.

Referring the abbreviation of "TiB" versus "TB" for 1024^4.

And 6.353 x 10^16 nibbles per furlong^2 per fortnight

I think you mean 13.468 TB/s per square mile.