The old tape backup has done all its depreciating and doesn't manage
the whole system in one piece any more.
What removable backup devices are popular now - and what drives are
people using for them?
My impression of Jazz drives is they are very nice, but maybe a bit
more expensive than tape, is the durability so much higher than tape
that they are really compelling.
I doubt we are quite ready to go completely to CD - R and CD - WORM,
and the disc capacity is only just enough at present for the whole
system - DVD or whatever the next generation of multi-layer high
capacity laser medium is called may be more interesting.
Has anyone met a backup device that runs the Delta block technology or
something like it - whereby the data is dividied into blocks of
suitable small size and only those blocks which have altered since the
last backup are copied to the backup?
It was offered as an offsite backup over a dialup connection -
presumably once NHS Net sorts out its usability and security problems
we will be offered the chance to backup our files as encrypted
deltablocks on a pair of distant servers.
One of the benefits to a one file per patient system of course is that
the DOS archive attribute for the file is all one needs to decide
whether that patient record should be placed on the backup. (I am stil
waiting to hear about the many massive disbenefits of such an approach
from anyone)
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