Need Suggestions for Automated Backup

[Net Llama!]

On Tue, 2 Dec 2003, Chong Yu Meng wrote:
> Hmm... I never thought about the size thing. Didn't factor it in.
>
> I'm not sure about RAID, though -- I'll have to do the sums to see if I
> can build in some redundancy. Which would you suggest ? Mirroring or a
> full RAID-5 array ? I'm thinking now of maybe dumping everything into an

mirroring is what i had in mind.  THat way you always have a 2nd drive
with the same contents as the first.  RAID5 will require at least 3
drives.

> external hard drive since it's actually cheaper (and faster) than tape.
> But I won't be able to keep many "snapshots" of the data, I imagine.
> Typically, how many days data does a company keep?

Depends on alot of factors, but the most important is how far back do you
need to have the data?

>
> Thanks and Regards,
> pascal chong
>
>
>
> Net Llama! wrote:
>
> > On 12/01/03 18:39, Chong Yu Meng wrote:
> >
> >> Hi All,
> >>
> >> I'm going to be deploying another set of servers very soon and need
> >> to work out some kind of backup scheme for servers that will be
> >> running a database and several web applications.
> >>
> >> I know that most people use a tape drive and cron job to backup
> >> stuff. However, right now my budget is really tight, and I was
> >> wondering how good CD-ROM backups are. I haven't heard of anyone
> >> using it, and I'm wondering if it is because they are unreliable. I'm
> >> thinking of the following scheme:
> >>
> >> 1. Tar all files to be archived into a humongous file
> >> 2. Mount CDROM drive (with blank CD inside)
> >> 3. Copy humongous tar file to CD
> >> 4. Unmount CD
> >>
> >> All operations are to take place possibly around 4am local time.
> >
> >
> > Well, its both the fact that they aren't 100% reliable, and the fact
> > that they only hold 700MB each, which isn't that much in the grand
> > scale of things these days.  You'd prolly be better off doing some
> > kind of RAID disk duplication scenario.
> >
> >
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman				netllama at linux-sxs.org
Linux Step-by-step & TyGeMo		     http://netllama.ipfox.com