David W. Fenton wrote:
On 30 Mar 2010 at 15:59, dhbailey wrote:
I won't use the internet for storing my
backups -- nothing's truly and verifiably secure on the
internet and nothing's to prevent some such company from
going out of business just at the time when I need to
restore those files to my hard drive.
You seem to be under the impression that one backup is ever
sufficient. It's not. In my 20 or so years of work as a computer
tech, the only time anybody has ever lost anything that wasn't
recoverable from a backup was because multiple levels of backup
failed.
To me the perfect example of this was the failure of the Roosevelt
Island Tram in NYC a few years ago, where riders were stranded
hanging in the tram over the river for hours and had to be rescued.
The tram had a main motor and two backups. The main motor failed, and
the backup failed. The second backup was in the shop for repairs, so
people ended up stuck.
Two levels of backup failed.
You are not safely backed up if you have only one backup strategy --
have at least two if not more. And any loss of one backup should be
irrelevant.
Did I say that I only had one backup strategy? What gave
you that impression? All I said was that online backup
storage at companies in an industry with huge business
failure rates wasn't part of that strategy.
Multiple hard-drive backups on-site as well as multiple
copies stored off-site are part of my strategy. But
trusting that data to industries which may be gone when I
need access the most isn't part of my strategy.
And while I can see your logic that the loss of any one
backup should be irrelevant, if several backups fail for
some reason and the last chance is an on-line business which
folds the day before I try to retrieve my data, that won't
be very helpful will it? And yet I will have spent all that
money over the months/years paying them for the storage of
my data.
--
David H. Bailey
[email protected]
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