[Gllug] Another followup to Backup talk

[John Hearns]

Tushar's talk on backup yesterday was great. Just the right level for a 
GLLUG meeting.

I mentioned a backup package which we use, and find very good.
It is an rsync-based package like backuppc.

http://www.dirvish.org/
"Dirvish is a fast, disk based, rotating network backup system.

With dirvish you can maintain a set of complete images of your 
filesystems with unattended creation and expiration. A dirvish backup 
vault is like a time machine for your data. "

The 'secret sauce' is that when a fresh image is made, any files which 
are unchanged are put in as links. So you don't fill up all your disk 
capacity.


My recommendation for (say) backing up 2Tbytes of medical image data 
would be to set up a small server plus 2Tbyte RAID array, and install 
dervish. You could then pull back a copy of your primary RAID as of any 
date.
If budget is tight, drop me an email offline. We can do a 1U 
self-contained storage server with 4 SATA drives.


-- 
      John Hearns
      Senior HPC Engineer
      Streamline Computing,
      The Innovation Centre, Warwick Technology Park,
      Gallows Hill, Warwick CV34 6UW
      Office: 01926 623130 Mobile: 07841 231235
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