2010/2/24 Agnello George <agnello.dsouza at gmail.com>: > Hi > > We have an issue with one of our clients , they have a mail server with > the /var/spool/imap partition as 150 GB . They need to take differential > backup on to /backup partition ( a different HDD of total 250 GB space ) . > We have tried dar , rsync, rdiff and impasync . But its is not sufficing the > need as to take a lot of time and consumes a lot of I/O . So, you need to add more disk i/o? (so, add some disk space with faster raid?) Take a look at: http://rdiff-backup.nongnu.org/ -- Eero