On Tue, 2 Sep 2003, Marcus Schopen wrote:
> >
> > Why don't you just use RAID to mirror your harddisk?
- dd is NOT backup ... its an easy way to get data corruptions
when disk-A has badblocks that are different that the badblocks
on target disk-B
- luckily, badblocks are rare and few now days
- and dd limits you to roughly the same size partions
on both ends otherwise, you have unused/wasted space
raid[n] is NOT backup ....
- raid does protect you from downtime if a disk dies
and you can keep going for a bit with the other disk
- have another disk failure and lose everything on all
disks unless you know how to recreate data from inodes
raid1 does NOT save a copy of a file
- erase it .. and its gone from both disks
> The first harddisk is running in a raid (mirroring). But beside this
> raid I'd like to have a backup to this second harddisk. Call me paranoid
> if you like, but I feel better with this solution.
for the paranoid ..
- backup daily from the last full backup to "daily backupdisk"
- backup 30 days every week to "backupdisk 30"
- full backup every week to "full backup disk"
- backup 90 days every month - to "backupdisk 90"
dailybackup, backup-30, backup-90 and full backupdisks are
all different disks on different server
-- assume that last weeks and previous full backups was bad ..
- how many files did you just lose
various backup scripts
http://www.Linux-Backup.net
-- restore your machine from "bare metal" on an irrelgular basis
to make sure "backups is working"
diff "ls -laR /current_system" "ls -laR /restored_from_backup"
( or whatever way you wanna verify your restored system )
c ya
alvin
> > Saves you daily backups and gives you instant backup on failure. And IIRC
> > your system can keep on running 'on one tyre'.
>
> Saluti,
> Marcus
>
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
