Re: par2

[AW <debian.list.tracker@1024bits.com>]

On Sat, 09 Aug 2014 15:24:49 -0400
Gary Dale <garydale@torfree.net> wrote:

 > Assuming you have both a backup copy and a live copy plus some par2 
 > files, you should be safe with the 5% to 10% I suggested.

If going with an external backup and pars... I'd also add md5sums to the list.

I've had great success using external drives drives connected to a low power
device like the Raspberry Pi.

The full data system:
CPU 0 -  Original is on host drive.
Pi 0 -  Backup is RAID 1 [with two separate drives]
Pi 1 -  Repair data is on separate backup drive along with md5sum lists. 

All connected via network, rsync between machines.  Cron scripts run nightly to
retrieve, verify -- md5sum -c first, repair data.

Additional cost is:
$70 for 2xRPi
$250 for 3x1GB drives

--Andrew