Re: Backup systems
hi ya ross
a cdrw can hold about 600Mb ??? or a 20Gb disk of regular files...
if your 20Gb hard disk is all mpeg files... it probably wont fit into cdrw
- a bigger hard disk of compressed data files wont fit into cdrweither
- a writable dvd gets you up to 2 or 4Gb of "backup" space...
- you should always perform "incremental backups" since the last full
backup... else if you lose a day or two of incremental backups...
you will NOT be able to restore the system anymore - you'd be missing
a file or two or more... hopefully non-critical files..
- i span weekly 30-day incremental backups across 4 weekly full
backups to minimize problems with "opps" in the network and backup
media and forgetful admins
- for several example backup scripts to cdrw...
http://www.Linux-Backup.net/app.gwif.html
c ya
alvin
http://www.Linux-1U.net ... 500Gb 1U Raid5 ...
On 15 Nov 2001, Ross Burton wrote:
> Hi,
>
> I am looking for a cheap backup system for my machine. A recent scare
> regarding my hard drive ("is it a 75GXP?") forced me to think about
> backup policy.
>
> I'd love to own a Jaz drive but at the moment I can't afford one.
> However, I do have a CD-RW in my machine.
>
> This is what I want to do in an ideal work:
>
> I have a script I run every month. It will examine every _user_ file
> (not system) and see what has changed since the last backup. These
> files will be written to an ISO image which I can burn onto a CD, and
> the index of files=>locations updated. Every few months I'll do a
> completely new set of CDs and throw away the old ones. Basically, I
> want an incremental backup procedure which generates ISO images and will
> generate an index for me. If I want to retrieve a single file it can
> tell me what CD its on. If I want to do an entire restore I can just
> give it every CD and it will extract the lot.
>
> Anyone seen anything like this? For the moment I'll make do with taring
> up ~/ and putting that on CDs.
>
> Which brings me to my next question. I'm not up on CD filesystems. Is
> there a filesystem for CDs which supports all of the unix features, i.e.
> long file names, permissions, owner/group etc. Can I burn a ext2 image
> onto a CD if I will only access it in Linux?
>
> Thanks for any help,
> Ross
> --
> Ross Burton mail: ross.burton@mail.com
> jabber: rossburton@jabber.org
> PGP Fingerprint: 1A21 F5B0 D8D0 CFE3 81D4 E25A 2D09 E447 D0B4 33DF
>
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