| gabriel rosenkoetter on Thu, 27 Sep 2001 00:00:28 +0200 |
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On Wed, Sep 26, 2001 at 01:22:39PM -0400, paul@dpagin.net wrote:
> Are "dump" or AMANDA good utilities for using with, say 50G of data and a tape
> drive autoloader?
I've not tested either at sizes that large, nor used amanda at all
for that matter, but they should scale just fine in principle. Since
yours is exactly the application they're designed for, it makes
sense to assume that they'd probably work. :^>
> Does anyone use "rsync" or something similar to replicate data between two
> systems?
No. rsync is not a good way to transfer files (espeically not
single, large archives). It's a pretty good way to keep directory
trees in sync, which is totally not the same thing. And it's not
really all that good a way to do that once your directory tree gets
to a certain size. (The act of running the rsync algorithm on, say,
the entire NetBSD source tree to get it to anoncvs mirrors takes
a ridiculous amount of time. I'm intimately familiar with this, as
I've been hacking together a better way to do the same thing.)
So, while you could buy a second hard disk and just keep a literal
second copy of all your data, even if that hard disk is local rsync
probably isn't the right way to keep the disks in sync. (This is
clearly a job for RAID 1).
--
~ g r @ eclipsed.net
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