Past two week I've been trying to setup a differential backup for 2 different jobs. Each time the differential runs it completely erases the old job and then start to write a new one. For the full backup job I'm using the archive reset bit selection. For the differential I've both time based (with the windows journal option checked) and the archive bit selection.
I've read some of the other posts on this topic and so far no suggestions have provided any kind of solution. Currently am using BE 10d. What I need is to have the full backup stay untouched for a month and then have daily differentials as a seperate file for each day. So far all BE does is nuke the old backup despite being plenty of free space on the SAN. Have already turned off the AV scanning on the server and the shadow copy that's moving files to an external drive to be sure the archive bit stays untouched, but still hasn't made a difference yet. Am at a total loss on what direction to go now, there's just too much data to do a full backup each night as it can take up to 17 hours to complete.