Re: UUIDs on drives
- From: Smoot Carl-Mitchell <smoot@xxxxxxx>
- Date: Thu, 14 Aug 2008 09:29:55 -0700
On Thu, 2008-08-14 at 12:27 -0300, Derek Broughton wrote:
When you find some duplication, _then_ object. I don't believe you're ever
going to find any, even with a 4-byte vfat UUID. 2**128 is still a very
big number.
A quick clarification here. With a 4 byte number, there is a 1 in 2**32
(about 1 in 4 billion) chance of duplicating a UUID. It is not 1 chance
in 2**128 which is for a 128 bit number.
To get an idea of the size of 2**128 it is bigger than the estimated
number of atoms in the known universe by many many orders of magnitude.
The number of atoms in the universe is approximately 10**80 which is
approximately 2**83.
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Smoot Carl-Mitchell
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