I have two duplicate servers that have an Exabyte Tape autoloader. They both run Exchange 2003 on Windows 2003 Server. What I can't understand is why one can take a little over 8 hours to do a full backup minus the mailboxes and the other to take over 20 hours to do a full back up. The server that takes 8 hours has over 150 GB of data. The server that takes 20 hours has a single C: partition and it contains only 20 GBs of data. They both run Backup Exec 9.1. They both have the Exchange Server addtion added to Backup Exec. The tape drives are Exabyte VXA-2 Packet Loaders. I did notice on the slower server decrease in transfer rates as it went down the line of it's objects to backup. The C: drive ran at 383 MB/min. The mailbox section ran at 97.6 MB/min. The public folders ran at 5.89 MB/min. I stopped the job before the Informatin Store backup started. As you can see it decreases greatly as the jobs move through the line. Any suggestions?