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Posted by Toby on 07/13/06 02:30
"Martin Heffels" <youwishyouwouldknow@nottellinya.com> wrote in message
news:q078b2lvsgp14452aoa18cldvb4tmt4bnp@4ax.com...
> On Tue, 11 Jul 2006 16:43:20 -0500, "Steve King"
> <steveSPAMBLOCK@stevekingSPAMBLOCK.net> wrote:
>
>>How can media budget anything? It is just plastic and emulsion in the
>>tape
>>form. If it is the 'recording electronics', to use terms a geezer can
>>understand, that handles the data differently than does the electronics in
>>a
>>tape backup deck I could understand that.
>
> The quality of the media, and the recording device help also in how
> accurate the back-up can be read. A wider head, tracks further apart, a
> stronger magnetic layer on tape, the tape-speed, it all helps.
> Compare it to the problems with burning music-CD's. People used to burn
> audio-CD's in at x1 or x2 to avoid coasters. Means that burning slower
> gives a more reliable result.
Also I believe that you record data redundantly on different parts of the
tape so that it can be reconstructed in case of damage. Think of par files
to reconstruct rar files...
This, of course, takes up lots of room. But after all is said and done, you
want the best recording and reading possibilites the first time around so
that you don't have to rely on error correction any more than necessary.
Toby
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