![]() ![]() In our testing this worked well when copying between two Windows machines that are a part of the same domain. with the auto-inheritance info suppressed), which is what Bvckup 2 does. This is a LOT of work, further compounded by very dense documentation.Īnother option was to settle for comparing them in SDDL format with some tweaks (i.e. So as far as Bvckup 2 is concerned one option was to create a full "ACL comprehension" engine to try and understand if any two given SDs are the same or not. This is obviously a problem, because two SDs may have different ordering of ACL rules or inheritance setup, but have the same effective permission set. Secondary issue is that security descriptors format is really quite complex and there's no native Windows support for comparing two SDs for equality. It not uncommon for them to be around 100 bytes each, so if you multiply that by 2.5M files you have, you are looking at a half a gig just for storing sec. Hashes are used instead of raw SDDL strings because the latter are too long to be comfortably used for larger backups. The "eba8a." checksum is a hash of a string representation of the security descriptor in SDDL format. The last-modified times are always updated whenever there's any other update scheduled for a file/folder. These updates are planned due to differences in DACLs. Why are these files being updated by Bvckup 2? What is the checksum at the end of every entry in the backup plan details? I am happy to provide further information if it is necessary. I am currently running the professional version of Bvckup 2 Release 78.8. The backup job is copying data from an NTFS volume to a CIFS share. In terms of the backup job configuration we have it set to copy "Security info" and to use "move/rename detection". Windows Explorer and Bvckup 2 both agree that the modified timestamp is identical. I say "for the most part" because the ordering of the ACLs listed in Windows Explorer is different and a local administrator group has access so the source has "source\administrators" with access and the backup has "backup\administrators" with access. I have verified that the DACL (as shown in windows explorer) is for the most part identical between the source and destination. The backup plan then says for the sample file that the last modified timestamp and the DACL are being updated. The last entry in the details for a sample file appears to be a checksum like eba8a61d13b57fd5 and this entry differs between the source and backup file. When I review the details of a sample file in the backup plan it shows the size, ctime, mtime and file attributes to be identical. I would like to understand why Bvckup 2 is planning on updating these files. I have carefully reviewed some sample files and cannot understand why they are planned on being updated. Recently we have had to rescan the destination and have found during a simluation run that roughly 2.5 million files are planned on being updated which would take a considerable amount of time. ![]() So I can't create exclusions for each of them.Oct 17, 2017We have about 5TB of data that has been being backed up using Bvckup 2 using a destination snapshot for quite some time now. What I dont know is how do i create the exclusions to pass the "username" component? The profiles in reality are named like: I know which folders I want to exclude for all users:ĭ:\profiles\john.smith\appdata\roaming\dropboxĭ:\profiles\john.smith\appdata\roaming\teamsĭ:\profiles\john.smith\appdata\roaming\OneDrive I know which folders I want to sync for all users:ĭ:\Profiles\john.smith\appdata\roaming\Microsoft\signaturesĭ:\Profiles\john.smith\appdata\roaming\Microsoft\templates It also caches content which is massive in size and file count (teams cache, onedrive cache, dropbox cache etc). Profiles contain everything a user does on a network session, for instance my documents, desktop, recent documents etc. ![]()
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