Veritas-bu

Re: [Veritas-bu] Tapeless backup environments?

2007-09-26 16:11:59
Subject: Re: [Veritas-bu] Tapeless backup environments?
From: "bob944" <bob944 AT attglobal DOT net>
To: <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Wed, 26 Sep 2007 15:54:20 -0400
> Pls read my other post about the odds of this happening.  
> With a decent
> key space, the odds of a hash collision with a 160=bit key 
> space are so
> small that any statistician would call them zero.  1 in 2^160.  Do you
> know how big that number is?  It's a whole lot bigger than it looks.
> And those odds are significantly better than the odds that you would
> write a bad block of data to a regular disk drive and never know it.

I did read your other post, and addressed your numbers.  C Freemantle
makes the same point I do, perhaps more clearly, in his "birthday
paradox" posting.


_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu