[TAG] Backup Strategy

[René Pfeiffer]

On Mar 19, 2010 at 2209 +0100, Karl-Heinz Herrmann appeared and said:
> 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!
> 
> [...]
> 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.

Don't use RAID5 with disks containing a large block number. The
probability for a double-disk failure gets higher with the amount of
blocks.

http://www.tomshardware.com/news/RAID-5-Doomed-2009,6525.html
http://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_5_disk_failure_rate

Consider RAID6 or using RAID1 block devices as building blocks for
logical volumes.

Best,
Ren?,
jumping to mention this, no harm intended. :)

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