Agnello George wrote: > 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 ) . You've stated things in terms of solutions. You may possibly get better answers if you state your goal. There is some capability you are trying to achieve. Tell us what that is, and you may make more progress. IOW, what is the purpose of the backup? As one mentioned, RAID may handle your needs. Mike -- p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);} Oppose globalization and One World Governments like the UN. This message made from 100% recycled bits. You have found the bank of Larn. I speak only for myself, and I am unanimous in that!