[mythtv-users] Mooting architecture for a DataDirect replacement

Jay R. Ashworth jra at baylink.com
Thu Jun 21 19:23:13 UTC 2007


On Thu, Jun 21, 2007 at 01:47:25PM -0500, Kevin Hulse wrote:
> > Well, the *real* question is "how far back/forwards" do you need to
> > go... but remember how Usenet servers *work*.  You can pull, from the
> 
> 	Go as far ahead as the data will allow.
> 
>         Go as far back as storage and processing make prudent.
> 
> 	Applying n+1 differentials to a base copy is just annoying. 
> There has to be some sane smaller limit that will be set by human
> convenience more than technical considerations.

Sure.  But I wasn't talking about "differentials", because they imply a
"full", and I don't propose that, either.

Doesn't *anyone* remember Usenet?  :-)

> 	In either case, chunking the data in one week increments would probably
> make some sense. "full backups" need to be frequent enough that people don't 
> want to throw sharp objects at you.

Most people will have their machines on and slurping all the time
anyway, so I don't see them *needing* "a full dump".

> > Leveraging RFC1036 and NNTP to move blocks of airing data seems to have
> > quite a number of advantages, operationally.
> 
> 	Polices regarding "initial" copies versus "deltas" should be independent
> of the transport mechanism.

I don't see that 1036 imposes any policies at all, which the competing
proposal seem *to*.

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274


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