Actually, it is over 250GB *per reel* and there are 4 reels, making about 1.2TB in .avi format.
In openexr format it comes down to around 700GB for the whole shebang.
You will need something like Nuke or Davinci to utilise .exr files.
They are 16bit linear raw scans, so will look nothing much like the print itself, the full gamut is in the scan so that any prospective editor can correct it to their tastes.