You don't. Full backups are necessary at some reasonable interval
for a couple of reasons.
1) Incrementals are based on the last full backup. So your
incremental backups will keep getting bigger and bigger until you
run another full backup. And, even with rsync, the network usage
will also continue to grow.
2) Incrementals decide what to back up based on timestamps. This
can lead to files being missed in some circumstances. For example,
files that were moved to a different location without changing
timestamps, or files that were moved/restored from elsewhere while
maintaining an older timestamp. An occasional full backup will make
sure these files get backed up.
3) If you are using rsync, then a full backup will not take any more
network bandwidth than an incremental. It will take longer because
of the need to actually compare each file, but only the changes will
be transferred across the network.
4) Due to the pooling features of BackupPC, a full backup does not
take up any more hard drive space on the server than an incremental.
What are you trying to accomplish by only running incrementals?
--
Bowie
------------------------------------------------------------------------------
Start Your Social Network Today - Download eXo Platform
Build your Enterprise Intranet with eXo Platform Software
Java Based Open Source Intranet - Social, Extensible, Cloud Ready
Get Started Now And Turn Your Intranet Into A Collaboration Platform
http://p.sf.net/sfu/ExoPlatform
