ColtsFanMN wrote:Also, I will note that I deleted 30GB of old files off the first server I listed, this made NO change in my backup file size the next day (or even weeks later).
The reason why your post has been merged to this thread can be found in this quote:
tsightler wrote:If you create a 40GB virtual disk, add 20GB of data to it, and then delete it, then take a Veeam backup, the Veeam increment will 20GB (assuming no compression)..... For example, I was once able to use a Veeam backup to recover a file that had been created and deleted on the same day by using an NTFS "undelete" program on a Veeam backup from a week earlier. This is something that would have been completely not possible with a traditional backup product. Also, a Veeam backup of a powered off VM is a forensically accurate image of the system, which can be very valuable for security related analysis.
Please be aware that with NTFS, when you write data to the disk and then delete it, the data doesn't actually get removed from the disk, so virtual disk blocks still contain the same dirty data blocks. If you want to make your full backups smaller, then you should sdelete your virtual disks. Please search these forums for existing topics describing how to use this utility.
ColtsFanMN wrote:NO THIS DOES NOT APPLY. PLEASE READ MY POST AND RETURN IT AS A SEPERATE POST!
It seems like the explanation above about "dirty" blocks on NTFS does apply to your case. Thanks!