Archival storage

[Patrick Finnegan]

John Foust declared on Tuesday 11 October 2005 07:17 pm:
> At 05:55 PM 10/11/2005, Patrick Finnegan wrote:
> >At 700MB/cd, it'd be about 12 reams per CD, not 92.  92 reams would
> > get you about 5.4GB, which is more than a (single-sided, single
> > layer) DVD-R holds.
>
> My math:
>
> 472,500 bits per page
> 945,000 bits per double-sided page
> 118,125 bytes per double-sided page
> 681,574,400 bytes per 650 M CD
> 5,452,595,200 bits per CD

> 46,160 pages
> 92 reams
> 59,062,500 bytes per ream
              ^^^
That's bytes per ream, not bits per ream.

681MByte/CD / 59MByte/ream = 11.5 reams/CD


Pat
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