Re: Archiving
- From: comphelp@xxxxxxxxx (Todd H.)
- Date: Thu, 17 Jul 2008 16:45:05 -0500
J <skyliner306@xxxxxxxxx> writes:
Two beginner questions about archiving on Unix:
1. How reliable are tar and gzip compared to commercial archiving
products?
tar and gzip probably better in terms of reliability as they're open
source, widely available on a large number of bootable distributions,
and extremely mature.
But there are issues other than reliability... Commercial products
primarily bring convenience such that it becomes mroe likely backups
actually get performed, but if you take that out of the equation, tar,
gzip, rsync and cron can all be used for a wonderful backup solution
for a *nix or nix-like environment.
2. Assuming space is not an issue, is there any benefit in storing
compressed data? In other words, would my text, pdf, audio files
"keep" any better being tar'd and gzip'd first?
They'd keep better copied in their original hierarchy, as they'd be
more easily accessible, and there'd be no processing time associated
with accessing the archived data. But gzip is lossless
compression and barring media issues corrupting the archive it's just
a space tradeoff.
You don't mention any security aspects... if you're concerned about
maintaining the privacy of your data on backup media, you might
consider tar, gzip (or the more aggressive/intensive bzip2) and then
gpg encrypting the final archive.
--
Todd H.
http://www.toddh.net/
.
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