Tyler J. Wagner wrote at about 14:13:39 +0100 on Thursday, August 19, 2010:
 > On Thursday 19 Aug 2010 12:45:21 Boniforti Flavio wrote:
 > > OK, I'll stick with ext3 or ext4 (don't know if ext4 is supported in
 > > Debian Lenny).
 > > Could you simply explain to me (curiosity) why ZFS de-duplication would
 > > not have any meaning on my setup?
 > 
 > It won't be of use because BackupPC already performs its own data de-
 > duplication within the pool.  I suppose I should say it will be of little 
 > use, 
 > since the de-duplication is at the block, not file, level. So that will help 
 > a 
 > little.
 > 

I would think the amount it would help would depend highly on the
nature of your day-to-day file changes. Block de-duplication would add
over file de-duplication if you have a lot of (large) files that
change incrementally, such as logs.

It would be interesting to hear back from users of ZFS about their own
anecdotal experiences.

------------------------------------------------------------------------------
This SF.net email is sponsored by 

Make an app they can't live without
Enter the BlackBerry Developer Challenge
http://p.sf.net/sfu/RIM-dev2dev 
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/