Hi <br><br>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 . <br>
<br>Is there any back up solution that you can think of , that can work in this situation  - open source or proprietary      <br clear="all"><br>-- <br>Regards <br>Agnello D&#39;souza<br><br><br>