Slow file copy performance over LAN between two Windows 2003 Serve

Discussion in 'Server Networking' started by Adie, Jun 2, 2007.

  1. Adie

    Adie Guest


    Very fundamental question this: how fast can one expect to copy a file
    between two machines?

    With a Gigabit LAN connection between two Windows 2003 Sp2 Servers we are
    getting only about 130Mb/s throughput when copying a single stream of files
    from a local drive to a network share yet a pure network benchmark shows
    around 900Mb/s of raw IP throughput.

    We know the disk throughput at both ends is fine and that multiple sources
    to one destination scale, its just the single thread copy from one machine to
    another that seems dismaly slow.

    XP to XP seems much better at around 300Mb/s.

    Any help appreciated
    Adie, Jun 2, 2007
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  2. What is your disk system in use on the servers? RAID level? SATA?
    SCSI? SAS?
    James Beukelman, Jun 4, 2007
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  3. Adie

    Adie Guest

    Tried Switch and Crossover

    Adie, Jun 17, 2007
  4. Adie

    Adie Guest

    Disk system is probably irrelevant as local copying to the RAID is >
    100MBytes a second.
    Adie, Jun 17, 2007
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