What is the fastest way to copy large amounts of data across a WAN

mgbooker used Ask the Experts™
Would like to know the fastest method to copy many files across a WAN?  Just using copy and paste is very slow when copying 2gb of data across the WAN. I have a DS3 connection from my location that links to a MPLS cloud which intern links to a data center. Please provide any detail on how you would copy data to the destination.
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robocopy is my favorite! It's a copy on steroids.

robocopy <source> <destination> /MIR /R:0
Anuradha GoliSystems Development / Support Specialist


fastest to my experience is to
1) reduce files to copy (zip in multple volumes)
2) set up a web server and host the zip files on the server
3) use a download manager (eg orbitdownloader) to transfer the files

I have been using this to transfer files from europe to asia over the public internet and the speeds are great compared to normal copy operations
So far the robocopy is the fastest by far. The RichCopy is a bit buggy causing errors after a few hours of continues copying. Right no the amout of data that I have coppied has been over 100GB and took about 14 hours to complete.
   ROBOCOPY     ::     Robust File Copy for Windows                              

  Started : Thu Apr 19 08:47:21 2012

   Source : \\ASERVERNAME\SOURCE$\Source\
     Dest : F:\Dest\

    Files : *.*
  Options : *.* /S /E /COPYALL /NP /MT:8 /R:1 /W:1


               Total    Copied   Skipped  Mismatch    FAILED    Extras
    Dirs :      8129      8128         1         0         0         0
   Files :    144535    144525         0         0        10         0
   Bytes : 114.117 g 114.115 g         0         0    1.95 m         0
   Times : 121:17:36  12:01:31                       0:00:00   1:30:39

   Ended : Thu Apr 19 22:19:32 2012

that's 8Gb/hr which is very fast for a WAN,
what type of internet connections do you have (on both sides)?
Sigurdur HaraldssonSystem Administrator

Go with Robocopy.


Robocopy gave the best results

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