Quote from jprad:
Actually, it's petabyte.
To get really anal, peta- is a decimal prefix, so it means 1000^5 bytes and not 1024^5 which is a pebibyte.
1000^5 is not a normalized representation (although numerically it's correct), so for full clarity:
One petabyte = 10^15 bytes
One pebibyte = 2^53 bits
