DFS vs. Robocopy

Discussion in 'Windows Server' started by kkantchev, Sep 27, 2006.

  1. kkantchev

    kkantchev Guest

    Hi there,
    We need to replicate/mirror file storage location to remote site. The files
    are large (from 60MB to 1GB) and they are going to be transferred over WAN
    I have two questions.
    First, what the better choice in our case, DFS or Robocopy?
    Currently in or testing environment we are using Robocopy, however our
    concern is whether Robocopy supports multithreading. So, here is my second
    Which approach (DFS or Robocopy) is more efficient when transferring large
    files over WAN link.

    kkantchev, Sep 27, 2006
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  2. If you use DFSR in the R2 update to Win 2k3, DFSR replicates only the
    changed part of a file where as robocopy will replicate the entire file. W/
    DSFR you can throttle the amount of WAN you use and you can have it use less
    during the day and full replication during the weekend or at night.

    Danny Sanders, Sep 27, 2006
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  3. If using DFS on 2000/2003, not R2, the DFS can/might choke with large files.
    With a slower LAN connection, things can get backed up in a hurry and you
    staging directory could backup, overfill and shut down DFS. With R2, I
    think you can replicate only the changed part of the file.

    Brian P. Hammer, Sep 27, 2006
  4. kkantchev

    Anthony Guest

    For large files with small changes, bit-level replication is what you need,
    with one of the replication products. Robocopy would be a bad idea unless
    the files change rarely AND completely. Robocopy would be a disaster if you
    have small changes and frequent copies. The new DFS could be good. Here's a
    definition of how DFS replication works,
    Anthony, Sep 27, 2006
  5. The only multi threaded one that I have used in the past is one called
    PeerSync by Peer Software. They also have a byte level replication. It
    isn't free but does come with a 45 use trial. Maybe you could use that to
    get the files there and then robocopy to keep it updated.

    Brian P. Hammer, Sep 28, 2006
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