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  • Copy multiple files across WAN simultaneously

    I have a 45Mb data pipe between two sites. I want to copy a few backup files from one site to the other. I can do this by simply doing a copy or xcopy, but it is very slow.

    I have read that the WAN latency has more to do with distance than bandwidth. If this is the case, is there a way to copy multiple files simultaneously each using there own amount of bandwidth? If I were copying 10 files, it seems that, as long as I don't max out my bandwidth, it would be 10 times faster.

    Can anyone take me to school on this one????
    Thank you,

    Marc

  • #2
    Re: Copy multiple files across WAN simultaneously

    It's nothing to do with physical world distance, and more to do with the number of intervening devices - the "Network Distance" or number of hops. Each device in the chain adds delays to the packet; and copy/xcopy are both TCP protocol users - i.e. each piece of data needs acknowledging by the recipient.

    You're far better off using a UDP-based file transfer utility/protocol such as (S?)FTP over a WAN - use FTP internally or inside a VPN tunnel by all means but use SFTP over the internet.


    Tom
    For my own and your protection, I do not provide support by private message under any circumstances. All such messages will be deleted and ignored.

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    • #3
      Re: Copy multiple files across WAN simultaneously

      Originally posted by Stonelaughter View Post
      It's nothing to do with physical world distance, and more to do with the number of intervening devices - the "Network Distance" or number of hops. Each device in the chain adds delays to the packet; and copy/xcopy are both TCP protocol users - i.e. each piece of data needs acknowledging by the recipient.

      You're far better off using a UDP-based file transfer utility/protocol such as (S?)FTP over a WAN - use FTP internally or inside a VPN tunnel by all means but use SFTP over the internet.
      Thank you. I will try setting up FTP. With FTP, can I maximize the bandwidth used? I guess that is what I am looking for. During off hours, make sure that I am using as much bandwidth as I can to make the job faster.
      Thank you,

      Marc

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      • #4
        Re: Copy multiple files across WAN simultaneously

        Some FTP clients will have a facility to manage the bandwidth they use but mostly it is used to RESTRICT the bandwidth to allow other WAN-based functions to continue functioning. I suspect from this that the FTP protocol uses all of the available bandwidth unless told otherwise... so you should be OK.

        If you want a client with bandwidth management you are probably going to have to pay for it.


        Tom
        For my own and your protection, I do not provide support by private message under any circumstances. All such messages will be deleted and ignored.

        Anything you say will be misquoted and used against you

        Comment

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