Windows ACL backup

[Robvil]

Hi,

I asked support how Veeam handles ACL during backup. Answer:
"Currently Veeam is not able to work with backup & restore of only ACL rights, they are firmly connected to file and folders. So if you will perform any changes - the whole structure will be backed up"

I changed ACL on 1.5TB of files, but during the evenings backup only 20GB was backup total. My question is why only 20GB and not 1.5TB?
Is it due to the build-in Veeam deduplication when backup to my repository where the files already exists?

Robert

[Dima P.]

Hello Robert,

In case of host-based image-level backup (VM backup with B&R, or volume-level backup with agent) ACL changes are included in the image and should not affect the backup size much: due to the nature of image-level backup that only processes changed disk blocks, as opposed to individual file system items.

For example, for agent-based file-level backup that statement would be correct as we track the file modification date and process the entire file version whenever anything is modified.

Cheers!

[Robvil]

Ohh, thanks. That make sense.