We created a task scheduler to run a bat file which has this code to take the incremental back up of the site.
"C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN\stsadm" -o backup -url http://xyz -filename D:\SP_Backups\abc.bak -backupmethod differential -nositelock -overwrite
The back up is doing fine every night but i am having a feeling it is taking really long. the back up file is about 9gb. it tooks about 4 hours to do it.
Is it normal or can we do something to speed up the process ?