That’d be 1 followed by 30 zeros.
http://en.wikipedia.org/wiki/Yottabyte
I can even begin to get my mind around a trillion, let alone the numbers on that Wiki page.
That tells us they will be keeping ALL the data on ALL of us for a very long time.
Such storage demands indicate one thing -- long term goal of a virtual police state.
Not quite; one KB is 1024 (2^10), not 100 (10^3), and one MB is 1024 KB [not 1000] — using that progression when you get into zettabytes you have That is 164,247,122 terabytes of difference. (This is 1024^7 vs 1000^7.) So this data-center has a bit over 164 million terabytes [per zettabyte] just in the measurement error.
That's like saying "Oh, we might be off by 100 light-years or so, no big deal."