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Date:      Thu, 16 Sep 2004 16:15:12 -0700
From:      John-Mark Gurney <gurney_j@resnet.uoregon.edu>
To:        Kris Kennaway <kris@FreeBSD.ORG>, Sam <sah@softcardsystems.com>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: ZFS
Message-ID:  <20040916231512.GT72089@funkthat.com>
In-Reply-To: <20040916225349.GA892@VARK.homeunix.com>
References:  <Pine.LNX.4.60.0409161031280.28550@athena> <20040916211837.GE70401@hub.freebsd.org> <20040916225349.GA892@VARK.homeunix.com>

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David Schultz wrote this message on Thu, Sep 16, 2004 at 18:53 -0400:
> > Now, over a year of runtime, the raw data amounts to (according to
> > Google Calculator):
> > 
> > (100 (terabytes / sec)) * 1 year = 3.4697207 10^21 bytes
> > 
> > or just over 2^71 bytes in a year.
> 
> A UC Berkeley study has some interesting statistics on total
> storage sold per year, including a breakdown by medium:
> 
> http://www.sims.berkeley.edu/research/projects/how-much-info-2003/printable_magnetic.pdf
> 
> They place the total storage sold in 2003 at 2^68 bytes and the
> amount of original data produced at 2^62 bytes.

Ummm..  Don't forget that pdf is only talking about megnetic media..
it doesn't include all the CD/DVD+-RW? discs sold..  A single store
probably has close to a half petabyte of optical media too...  Plus
it doesn't include all the cd and dvd's sold either..

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."



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