Hi All, I did the defragmentation on my exchange 5.5 database across the network on the other pc with free space 7.5GB and my current priv.edb is about 6GB. But the defragment is fail when reach 80% of defragment. As i checked the microsoft website do the defragment only request 110% of the total current database. So my current db is 6GB so it only require about 6.6GB of free space to run the eseutil /d /ispriv Tf:\TempDfrg.edb. Please advice. Best Regards, NTT MSC SDN BHD Patrick Goh IT Engineer (IP Engineering Department) Tel: (603) 8311-2030 Fax: (603) 8311-2091 Mobile: 012-2151000 Customer Service: 1-800-881-736 (System Integration) 1-800-880736 (ARCSTAR) +603-8318-1121 (ARCNET ISP) http://www.arc.net.my http://www.nttmsc.com.my