Good afternoon, all,
(Sorry for the late reply! :-)
On Wed, 23 Jul 2008, [EMAIL PROTECTED] wrote:
> Hello,
>
> A co-worker and I were talking about various ways to do 'backups' to try and
> prevent data loss. The topic came around to a file system we had used
> at a previous job. I can't remember the specifics, but we believe it was
> a Network Appliance system.
>
> One of the cool features it offered was a series of hourly, nightly and
> a monthly backup of files. We kind of surmised that it was some sort of
> hard linking of the same file name in a different directory... i.e.
>
> ~/foo.txt
>
> hourly.0/~/foo.txt
>
> So, if you accidentally deleted your home directory copy, you could still
> recover
> it for a short time. Once it made it past X hours, the file would start
> getting
> removed from the hourly.n directories. We were never admins on the box
> nor do we have experience with it, so the hard link is just a theory...
This is exactly the approach I used in rsync-backup:
http://www.stearns.org/rsync-backup/
The script is currently set up to do nightly snapshots, but could
be tuned without too much trouble to do hourly snapshots if that was
needed.
Cheers,
- Bill
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(Courtesy of Micheal Poor <[EMAIL PROTECTED]>)
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William Stearns ([EMAIL PROTECTED], tools and papers: www.stearns.org)
Top-notch computer security training at www.sans.org , www.giac.net
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