[zeugma]

Do you realize that this is equivalent to having 1000 300GB hard drives? Holy mackeral! What comes after terra? Penta?

Exobyte.

i'll take two. 

[marvlus]

Exobyte.

Here's what I found on Wikipedia: Terra, then Peta, then Exa. Afte Exa comes Zetta, then comes Yotta. (similar to Santa's reindeer :-)