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Gigabit Network working excepted for 1 computer > Slow write speed ?!

Discussion in 'Networking' started by fishbone007, May 30, 2010.

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  1. fishbone007

    fishbone007 Thread Starter

    Joined:
    Jul 12, 2009
    Messages:
    9
    Hi everyone,

    I have the following weird problem and couldn't find any solution despite long troubleshooting...

    Network architecture:

    PC 1: Win 7 Gigabit Card Driver Updated Cable Cat 6 2x1.5TB Western Digital 1xSSD 64GB

    PC 2: Win 7 Gigabit Card Driver Updated Cable Cat 6 1x1TB Western Digital

    PC 3 (Brand New): Win 7 Motherboard: Gigabit P55A-UD5 All Drivers Updated especially Realtek ones Cable Cat 6 SSD 64GB + Raid5 on 4disks

    Trendnet Gigabit Switch

    Ex1: Copy PC1 to PC2 = 40-50MB/s >> OK

    EX2: Copy PC2 to PC1 = 40-50MB/s >> OK

    EX3: Copy PC1 to PC3 = 5MB/s ????!!!

    EX4: Copy PC3 to PC1 = 50MB/s >> ok

    EX5: Copy PC2 to PC3 = 5MB/s ????!!!

    EX6: Copy PC3 to PC2 = 50MB/s >> ok

    To sum up:

    Given the transfer speed the gigabit network is working.
    PC3 is the problem. When copying data from PC3 to PC1 or PC2 transfer speed are OK however when PC1 & PC2 are copying to PC3 the transfer speeds are ridicously slow. How can such a weird situation happen ?

    Thanks a lot in advance for sharing your insights.


    NB: Firewall / antivirus (NOD 32) deactivated
     
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