[CentOS] Backing up a centos serveR? how to ? Newbie question..

Per Qvindesland per at norhex.com
Mon Oct 19 15:35:13 UTC 2009


A really good place to find out info about the various raid levels and
what their good for is here:
http://www.acnc.com/04_01_00.html

But please don't confuse raid with something like Bacula :)

Regards
Per

At Monday, 19-10-2009 on 16:28 "Bobby"  wrote:

On Monday 19 October 2009 08:56:48 RedShift wrote:
> David Suhendrik wrote:
> > may be rsync help You
> > Or u can try raid 0[mirrorig]
> > for replicate failover triying drbd and heartbeat but I've tested
and
> > unsuccessfull on my zimbra machines
> 
> RAID IS NOT A BACKUP.
> 
> I repeat.
> 
> RAID IS NOT A BACKUP.
> 
> Nor is replication.

Exactly. RAID above RAID 0 does provide redundancy towards hard disk
errors. 
It makes the system more robust. But the data is still in the same
set of 
drives. Backup, as with scp, rsync and cron to a different computer
is what 
you need. We backup our computers every hour with the above. It's
very low 
impact and all we can loose are some changes in the last two hours if
the 
system dies during rsync.

David, RAID 0 is not mirroring. What it does is extend capacity over
two or 
more drives. RAID 1 is mirroring. 

Bobby
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