20 Mar
2013
20 Mar
'13
12:41 p.m.
On Wed, 20 Mar 2013 09:32:39 -0700 (PDT)
geneb <geneb at deltasoft.com> wrote:
What about SDHC cards for long term storage?
(Consumer grade) SD cards are cheap and unreliable junk. Current SD
cards are MLC flash and MLC is down to a few years of data retention
time. The newest SD cards are TLC flash and there we get _less_ than a
year data retention time.
Industrial grade SD cards exist and they are OK, as they are SLC flash.
But expect to pay 10 x times more per GB storage capacity.
The rule of digital archiving applies:
Preserve the data, not the medium.
I.e. migrate the data to a new medium on a regular base and have
multiple copies of the data on different media in different locations.
--
\end{Jochen}
\ref{http://www.unixag-kl.fh-kl.de/~jkunz/}