3 ms·

Tapes, not disks.

• DanBC 13y ago
  Assuming 3:1 compression our 1 zettabyte (or 1,000,000,000 terabytes) of data becomes 333,333,333.33 TB. Using a nice IBM 4 TB tape we need 83,333,333.33 tapes for 1 zettabyte. I still find the 5 zettabyte figure hard to believe. But searching for tape does start producing a lot more government-like language and documents. Knowing that there is a "Summary Of Non Confidential Information On U.S. Magnetic Tape Coating Facilities" makes me want to read the confidential version.