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Re: Backup Techniques onto DVD+-RW
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: Backup Techniques onto DVD+-RW
- From: "L. V. Lammert" <lvl_(_at_)_omnitec_(_dot_)_net>
- Date: Fri, 23 Dec 2005 14:43:29 -0600
At 01:18 PM 12/23/2005 -0700, Whyzzi wrote:
Interesting idea, and have to admit I didn't think of it. There is a
second HD ide hard drive slaved in the mail server, as well. I could
use the likes of DD or dump/restore onto the second drive (slave).
Last time I did that (dump/restore), I screwed up though, which is why
a second backup method is preferable. I was playing CCD with the likes
of that, for the separate /home partition. But for some reason it
didn't quite feel right (likely a setup problem), so I scratched the
The biggest advantage of rsync is that you are only backing up changed
files; sort of like the old 'incremantal'.
The biggest disadvantage is that you're maintaining a single remote copy;
if you wish more than one historical version you must manage separately.
As for the cost of DVD+/-RW media, you'd be surprised at you can find.
We bought Verbatim DVD-RW media @ 1.49$ Canadian each. I had also
found a 5pack of some unknown brand (not R-DATA) being dumped at our
local Staples for under $9cdn which I purchased for home use.
Well, . . that's still expensive compared to free. Backup servers are not
mission critical, so just about any old h/w is sufficient (assuming big
enough disk). You can also locate them at a remote site (we offer off-site
backup to our clients at a nominal charge).
If you like, you can daisy-chain machines - h/w is commodity now, we almost
always have capable machines cycling through the shop as 'upgrade leftovers'.
I've got a squid-cache proxy server local to that subnet running
OpenBSD as well, and it has plenty of HD space left on the 80gig
Good candidate! If you have sufficient disk space, just create one or more
directories with images. For example, five (or seven) directories would
allow an entire week of archives.
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