Back in the Olden days, the originial Advanced Technology Attachment Packet Interface(ATAPI) or Advanced Technology Attachment (ATA) all used a 28 bit addressing mode. That allowed for the addressing of 268, 435, 456 and 512 byte sectors only (128GiB or 137 GB). The newer speicifications allow 48 bit addressing, this extends the limit to 128 PiB or 144 petabytes because the doubling of the bit rate in exponential!!
1 petabit = 1 x 10 to the 15th bits = 1,000,000,000,000,000 bits. 6 bits per byte = 166,666,666,666,666 mB x 128 = 144,000,000,000,000,000 MB or 144,000,000,000,000 Gb. Holy Crap Batman!!!!! Now go ahead and fill up that drive!!!!!! LOL!!!
Yea like the 144 trillion Gb drive limit wil be to small exactly when? Hehehehehehehe!!!