Well, I like HD mirroring because if the main system dies, I just stick the backup HD in and reboot, and the system is running again (either on single user doing some forensics, or 100% functional) I hadn't considered the option of one of my backup disks dying, still I don't favour the idea of having just a few days to realize there's a rootkit before it spreads to the backups... I know, 5 minutes should be enough to detect rootkits, but just in case... Thanks for the suggestion! Miquel
On Thu, May 17, 2001 at 05:39:15PM -0700, Alvin Oga wrote: > > 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 > > > > > > -- > > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > >
