Re: [LAD] [OT] Richard Stallman warns against ChromeOS

On Thu, 2010-12-16 at 14:38 +0100, Ralf Mardorf wrote:
> On Thu, 2010-12-16 at 08:13 -0500, gene heskett wrote:
> > On Thursday, December 16, 2010 08:12:34 am Arnold Krille did opine:
> >
> > > On Thursday 16 December 2010 01:13:24 Dan Kegel wrote:
> > > > On Wed, Dec 15, 2010 at 10:48 PM, gene heskett <gheskett@email-addr-hidden>
> > wrote:
> > > > > Now, if we can just get a law that when I have ... issued the delete
> > > > > to the server, it truly was deleted
> > > >
> > > > For what it's worth, Google's caution in promising deletion
> > > > is probably because it's not quite sure how to do that
> > > > quickly. Users would be Very Very Angry if a disk outage
> > > > or a fire in a datacenter resulted in the loss of their stored
> > > > email, so Google probably has some sort of offsite backup
> > > > arrangement, and that might complicate prompt deletion.
> > > > ... yup,
> > > > http://mail.google.com/support/bin/answer.py?hl=en&answer=7401
> > > > says
> > > > "residual copies of deleted messages and accounts may take up
> > > > to 60 days to be deleted from our active servers and may remain in our
> > > > backup systems."
> > > >
> > > > So, if you were google, would you use tape backup? If so,
> > > > how would you do that permanent deletion thing? If not,
> > > > how would you make darn sure you didn't anger users by
> > > > losing messages during a disaster?
> > >
> > > I don't think google uses magnet-tapes or similar for any backups except
> > > the vital core data of its business. Given the number and size of their
> > > data- centers around the world, they just sync the data to a different
> > > part of the world an be done with it. Of course the deletion has to be
> > > synced to all remote-copies and probably also forwarded to older
> > > backups but once such a mechanism is implemented it should do the
> > > actual delete within a day...
> > >
> > > There are even universities that decided against a new tape-library and
> > > in favor of a big stack of disks for long-term backup because these
> > > where cheaper, similar reliable and much faster for restore. And they
> > > don't need a special tape-library-managing app to access the data, a
> > > file-browser or the command-line is enough...
> > >
> > > Have fun,
> > >
> > > Arnold
> >
> > I run amanda here every night, but no tape, big disks instead. Much more
> > usable come recovery times.
>
> Especially at home, where tape means DAT drive. I don't have any DAT
> equivalent to store computer data, but 2 audio DAT recorders, both with
> broken drives. Those drives with a thing for eating tapes. A friend has
> got more, but just two DAT recorders, all recorders also with broken
> drives. Another possible issue that isn't that seldom, is that the
> carrier coat will loose contact to the magnetic coat. I never heard of
> DAT tapes where this happened, but I know this from professional analog
> video tapes. At least dropouts could arise by long time storage for such
> small tapes. Ok, professional tapes for data storage might be 1/2" to
> 2", dunno, but of so, they might be very expensive. I just tar to my USB
> stick from time to time or from one HD to another. If we need perfect
> data security at home, IMO we should use RAID, but doing backups.

Ok, ok, a RAID system still need backups, somebody might delete
something etc..

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Received on Thu Dec 16 16:15:05 2010