We backup a 1TB VMWare File Server using VMWares VCB with Symantec Backup Exec 12.0, everything is connected with 4Gb fibre

Over the last few months our job rate has slowly dropped from around 1600Mb/s to a disappointing 650Mb/s.

For some reason after tring everything imaginable the problem was solved by simply defragmenting the drive being backed up.

I finally tried this after finding a similar story on vmware forum

I recently started using the VMWares Consolidated Backup product to backup the virtual servers on our VMWare ESX hosts. Dues to our VCB proxy server only having a 40Gb Hard Drive we where having problems with the pre-command script that comes with the Backup Exec integration module for VCB.