What is the current progression of size for data counting?
Kilobytes
Megabytes
Gigabytes
Terabytes
What is next and how far does it go?
After Terabyte is:
Petabyte (1 000 000 000 000 000 bytes)
1 Petabyte: 3 years of EOS data (2001)
2 Petabytes: All US academic research libraries
20 Petabytes: Production of hard-disk drives in 1995
200 Petabytes: All printed material OR
Production of digital magnetic tape in 1995
Exabyte (1 000 000 000 000 000 000 bytes)
5 Exabytes: All words ever spoken by human beings.
Zettabyte (1 000 000 000 000 000 000 000 bytes)
Yottabyte (1 000 000 000 000 000 000 000 000 bytes)
Cool
I was at a recent major computer trade show and heard “petrabytes” more than once.
Automatically downgraded those companies technical savvy.
Incidentally, in 1993’s The Hammer of God, Arthur C. Clarke (an entertaining but perhaps not expert commentator on the subject of artificial intelligence) considered about 3 terabytes of data sufficient to comprise a self-aware computer.
That, obviously, was before the concept of “bloatware.”
So, a really, really high capacity computer might be said to have a lotta yottabytes. 
*So, a really, really high capacity computer might be said to have a lotta yottabytes. *
And an even higher capacity one with nothing to say might have yottayottayottabytes.
RR