DSM-G600, DNS-3xx and NSA-220 Hack Forum

My problem is similar to the above - doubling up on file backups.  I think there is a problem synchronizing a windows computer and a Linux server.  I have trawled the net and only turned up references to clock drift on different computers.  I am pretty certain that is not the problem I have. 

I use Far Manager to backup files.  There is an option for updating only newer files from the host directory to the target server directory. 
This works perfectly for windows to windows machines. 
However for windows to Linux copies there is a problem of some sort. 

Here is how it goes.  I back up a directory from my windows machine to my DNS323.  A week later when some of my files have changed, I do an incremental backup - newer files only. 
As mentioned above, for a windows - windows setup this works fine. 
However when I do it for a windows - Linux setup, there is a discrepancy on the time date stamp of some files.  Basically I have to back up the same files - changed or not changed, again.  It is always the same files, each and every incremental backup. 

It should not be a clock drift problem as the files should be time date stamped the same as the original when they are copied (yes/no?). 
The same problem occurred when I used a Linux kernel based NASLite setup (very s.l.o.w.). 

The only thing I can think of is that the Linux kernel on the DNS323 ''rounds'' the time, sometimes down thereby making it appear to need to be backed up again.  But my knowledge of Linux is so limited that this is a pure guess. 

I suppose one answer is to use different backup software that is known to work windows to Linux? 

Any thoughts anyone? 

Thanks in advance

Biscotte

pcm wrote:

What I'm seeing on my system, is that incremental backups from my Windows XP box to my NAS are just fine, but backups from the NAS to the Windows XP system (to backup a shared area) is effectively doing a full backup each time (using ntbackup).

With more research, I see that the "archive" flags on the files on the NAS are NOT clearing. Even if I manually clear the flag, using the "attrib" command, the flag is not clearing. I don't know why this flag is not clearing, but am pretty confident that the flag is preventing the incremental backup from skipping the file.

Anyone see this problem?

Anyone know how to solve it?

Yes. I have seen the exact same thing. There seems to be no possibility to reset the archive flag from windows on the DNS-323. Neither from the backup program, nor manually.

Since using the archive flag for detecting which files have been changed, or been added, an incremental backup will always result in a full backup if the archive flag can not be reset.

I don’t know how this works under other operating systems than Windows. In my MacBook I struggle to even see a archive flag (I cant find it). Can it be that this is a windows specific feature? If so – how do we get around it?

have you tried not using NT backup and using something like robocopy (without the archive bit checked?).

i cannot recall, but i think it can.. just download it, its fee and give it a shot

SUGGESTION, you get the GUI version of it so you can set the flags (makes life so much simpler)