3 Nov
2010
3 Nov
'10
3:25 p.m.
On 11/3/2010 2:46 PM, arcarlini at iee.org wrote:
Terry Stewart [terry at webweavers.co.nz] wrote:
This isn't really backup, but is versioning. I know there are some
products which allow one to "go back" on windows, but in reality it is
unpractical to back up enough to cover the problem of unintended
deletion except by such a product, or by using versioning to cover your
mistakes.
I run a few svn repositories and save them on my main system.
Given the high reliability of most hard drives
these days, I
do wonder if
many people have forgotten that this technology can
occasionally fail.
I guess you know already but I keep coming across people who
think that RAID means you'll never need to backup again. Quite
how they expect to recover from accidentally deleting something
important beats me.
In passing, I don't think that drives are *that*
reliable these
days. Once you're past infant mortality then I'd expect to get
a good 5 years out of a drive, but that passes sooner than
you'd think (or maybe people upgrade well before that happens :-)).
definitely. I just completed duplicating my 4tb archive system, and
will be mirroring to that system hopefully someday off site.
Perhaps SSDs will change the playing field a little,
but overall
I doubt that reliability levels will shoot up drastically: there's
always something that can be shaved slightly thinner to save a few
pennies (and if things don't go wrong eventually, how can you sell
them a shinier widget?).
Antonio
I'm not sure how to do a real backup of 4tb in both media and practice.
I tried using a 2 2tb LVM linux system, and archiving those drives, but
that doesn't thrill me.
I'm not really interested in tape anymore.
Any thoughts on those or other means of large backups. It doesn't take
much to get to about 2 1/2 tb these days when you have 15 to 20 years of
ever increasing multi gb drives, and take the approach to put all of the
unique data from each onto a single archive.
Jim
Jim