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P3D 700GB hard drive

  • From: Tom Hubin <thubin@xxxxxxxxx>
  • Subject: P3D 700GB hard drive
  • Date: Mon, 18 Oct 1999 10:15:40 -0600
Hello Bob,
 
> On the other hand, I see that IBM just announced a 700+ GB
> (not a typo) HD. Dunno how much it might cost. Plus of
> course that's beyond 32 bit addressing - it'll be interesting
> to see how that's handled.

A 16 bit FAT can handle up to 65536 allocation units with 65536 bytes
per allocation unit. That is 4.29GB max for a 16 bit FAT. Actually, I
think the limit is half of this but I don't recall why.

So I would expect a 32 bit FAT to handle 4.29G allocation units with
4.29GB per allocation unit. That is a lot more than 700GB. 18 x 10^18 to
be more specific.

Windows 95 usually sets the allocation unit size to 4096. Even this
times 2^32 allocation units is 17.59 TeraBytes. That is 25 times the
700GB drive. But I don't think that it is limited to 4096 bytes per
allocation unit.

Anyway, whenever P3d does exceed the limit you can partition the drive.

Tom Hubin
thubin@xxxxxxxxx