[TAG] Backup Strategy

[Karl-Heinz Herrmann]

On Sun, 7 Mar 2010 02:53:20 +0530
Amit Saha <amitsaha.in at gmail.com> wrote:

> I am going to use it as a dedicated backup drive. Thanks in advance!


Well then use one 2TB partition. You might need cfdisk or similar
instead of the regular fdisk which cant handle filesystems beyond a
certain size. 

If you would like to keep the option of further enlarging the backup
storage beyond the 2TB and still see it as one huge partition use lvm,
use the 2TB drive as the first physical member of that LVM volume and
create your filesystem on that virtual disk. 

Once the 2TB are used up buy a 4TB  drive and add it as a second
physical drive to the volume, enlarge LVM and filesystem and go on. 

With that amount of data you do want protection against single disk
failure. So if the primary disk is not already a raid system you should
make the backup a raid 1 or 5.



If your amount of data ist typically growing by adding new files you
might want to have a look into backuppc which can give you daily views
of the data (if they change) while storing identical files only once
aand hardlinking them. 


K.-H.