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Server 2008 R2 Transfer Issues

    Question

  • Hey Guys,

    I have an issue on a Windows Server 2008 R2 box, when I initiate a transfer at around 2 AM it runs but every day around the 6GB (10GB file) mark the transfer dies and tries to restart. Now my Windows Server 2003 R2 x64 which transferred the same file nightly at 2 AM never had this issue, the file transferred with no problem. What is different in 2008 R2 that is stopping my transfers around the same 6GB mark every morning?

    Tuesday, April 03, 2012 9:40 PM

Answers

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  • Hello,

    Could you pls elaborate bit more on "Transfer" which has been mentioned in your post ?

    What are you transferring ? what kind of files ? what is the source and destination ? is it scheduled or manual ? are you using any scripts ? do you see any errors in event viewer on 2008 R2 box for failed transfer ?


    This posting is provided "AS IS" with no warranties or guarantees and confers no rights.

    Most of the downtime's are caused because of SysAdmin's curiosity ! - Santosh

    Wednesday, April 04, 2012 1:57 AM
    Moderator
  • I am using robocopy to transfer a 10GB .zip file from one 2008 R2 server to another 2008 R2 server. It is a scheduled job every morning at 2 AM. I will have to look at the event viewer tomorrow when I am back at the office. 

    However, like I stated robocopy worked just fine from a 2003 R2 server, but when we changed to a server 2008 R2 server, it won't transfer, it hits 6GB and crashes. It seems like the certificate for the connection, or the security is timing out around the 6GB mark? Only reason I state that is I know Microsoft reworked the security stack in Server 2008 and above. Not sure if I am on the right track or not?


    • Edited by Cryson Wednesday, April 04, 2012 3:42 AM
    Wednesday, April 04, 2012 3:40 AM
  • Not sure about the cause, however I would suggest you to look at TCP chimney Offload settings on both source and destination servers. Event logs would give you more detailed information for the likely causes.

    Here are some of the related discussions which might help you to troubleshoot the issue further

    Windows 2008 R2 - large file copy uses all available memory and then tranfer rate decreases dramatically (20x)  

    http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/3f8a80fd-914b-4fe7-8c93-b06787b03662 

    robocopy very bad performance on Windows Server 2008 R2 

    http://social.technet.microsoft.com/Forums/en/winservergen/thread/105f6692-5de5-49e7-b242-ef75f99c07b3 

    robocopy 5.1.10.1027 - Win 2008 R2 64bit - VERY BAD BUG !!! 

    http://social.technet.microsoft.com/Forums/en-CA/winservergen/thread/4af15190-2b53-460c-a11d-b0d750811768 

    Also, enabling jumbo frames on NICs of the servers might help during large file transfers 


    This posting is provided "AS IS" with no warranties or guarantees and confers no rights.

    Most of the downtime's are caused because of SysAdmin's curiosity ! - Santosh


    Wednesday, April 04, 2012 4:07 AM
    Moderator