Robocopy repeatedly updates files on remote server

[Michael]

Can anyone explain to me why robocopy always tries to copy some files
everytime it syncs the source and destination even though the files
haven't been modified in some cases for days, months or years? The
options I used are:

Source : \\xyz\abc
Dest : \\def\jkl

Files : *

Options : /TEE /S /E /COPYAT /PURGE /MIR /R:1000000 /W:30

The files that do get modified are always changed on the source and
the destination serves as a backup repository. The sync would only go
the other way to restore the lost source system. The files get updated
by both PCs and Sun workstations and the source is also an NFS server
using Hummingbird 2007.

Thank you,

Michael

P.S. I changed the source and dest values since they refer to my
workplace servers.

 

[Pegasus \(MVP\)]

Re: Robocopy repeatedly updates files on remote server


"Michael" <mrobbeloth@gmail.com> wrote in message
news:1184252006.737390.5360@g4g2000hsf.googlegroups.com...
> Can anyone explain to me why robocopy always tries to copy some files
> everytime it syncs the source and destination even though the files
> haven't been modified in some cases for days, months or years? The
> options I used are:
>
> Source : \\xyz\abc
> Dest : \\def\jkl
>
> Files : *
>
> Options : /TEE /S /E /COPYAT /PURGE /MIR /R:1000000 /W:30
>
> The files that do get modified are always changed on the source and
> the destination serves as a backup repository. The sync would only go
> the other way to restore the lost source system. The files get updated
> by both PCs and Sun workstations and the source is also an NFS server
> using Hummingbird 2007.
>
> Thank you,
>
> Michael
>
> P.S. I changed the source and dest values since they refer to my
> workplace servers.
>

This happens when the granularity of the date/time stamp of the
two file systems is not the same. One file system might have
a granularity of 1 second, the other of 2 seconds.

 

[Michael]

Re: Robocopy repeatedly updates files on remote server

> This happens when the granularity of the date/time stamp of the
> two file systems is not the same. One file system might have
> a granularity of 1 second, the other of 2 seconds.- Hide quoted text -
>
> - Show quoted text -

Pegasus,

Thanks for the tip. I found the /FFT switch did the trick.

Michael