hi ya miquel
assuming you want to use two hard disk backups... ( must be important data
) ??
main# mkdir /Backup_1
main# mkdir /Backup_2
-- you should alternate between the two backup disks/servers
- if your main disk and your backup_1 dies...you still have
yesterday on Backup_2
have fun
alvin
http://www.Linux-Backup.net .. sample scripts ...
Use "date"... figure out if it even or odd days...
and mount the even or odd days backup_1 or backup_2
miquel_backup.pl
...
if ( $odd ) {
mount Backup_1:/Backup_1 /Backup
} else {
mount Backup_2:/Backup_2 /Backup
}
...
--
-- backup only changes since last full backup
--
find /home /etc /root -mtime -$cnt | tar zcvf /Backup/$DATE.tgz
$cnt += 1
...
--
-- you should do FULL backups once a week or once a month ???
--
-- there are major problems with doing just 24hr incrementals
-- you should perform incrementals since last FULL backup...
--
-- if you are worrying about intruders etc... you now have 3 boxes
to worry about instead of just one
-- you should encrypt your backups if security is an issue
-- once a month...erase your old backups from few months ago... via cron
-- one day, when time is available...create a new test file...
- backup it up by manually doing the backup....
- pretend you just have a major primary disk failure
- and try to restore everything from backup
-- now you can rest assured you have a reasonable backup ??
On Fri, 18 May 2001, Miquel Mart?n L?pez wrote:
> Hi all,
> I am trying to decide on backup schecduling and have several things in
> mind. My system is on a main hard disk, and backups are made by copying this
> HD to another (equal sized) one.
>
> Now, the point is I have one main HD and 2 backup HD, and have two criteria:
>
> a) Backup every one or two days, alternating the backup disks, so that the
> oldest backup is max 4 days old, and the newest is just 2
>
> b) Backup every one or two days with the same backup disk, and make weekly
> backups with the other one.
>
> As you see, it's a compromise between having updated backups and having the
> time to realize problems or intrusions.
>
> So, just wondering, what do you do/suggest?
> Thanks!
> Miquel MartÃn
>
>
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