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    Problem copying to external drives?

    Discussion in 'Asus' started by nfshp253, May 4, 2010.

  1. nfshp253

    nfshp253 Notebook Evangelist

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    I have a serious problem when copying files to an external hard drive. I have three different hard drives, a 160GB Samsung, a 320GB Maxtor and a 1.5TB Buffalo with different cables and all give the same problem.

    Whenever I copy something, it is super fast at the start, with speeds averaging around 90MB/s (It really is copying that fast according to the remaining filesize). This drops gradually to around 24MB/s (with the completion at around half) and then it hangs for a very long time and nothing is being copied. After a few minutes, the copying is done but the problem is that it takes ages to copy when the process hangs and it causes my computer to slow down or even slow down too. It also hangs about a minute just before the file is done copying.

    Anyone experiencing the same problems?

    I have a G51Jx-A1 with Windows 7 Ultimate x64, if that helps.
     
    nfshp253, May 4, 2010
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  2. Kalim

    Kalim Ceiling Cat Is Watching U

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    Anti-virus software?
     
    Kalim, May 4, 2010
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  3. nfshp253

    nfshp253 Notebook Evangelist

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    No, that happened even when there was no anti-virus.
     
    nfshp253, May 4, 2010
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  4. Starcub

    Starcub Notebook Consultant

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    What interface are you using with your drives and how much data are you copying?

    As an experiment, I tried copying about 900 MB of data from one partition of my RAID 0 array to another in both Vista and Win 7 RC. In Vista I got about 15MB/s consistantly throughout the transfer. In Win 7, I started at about 60, went to about 25 at the halfway point, and finished at about 10MB/s. Interestingly, when I erased the data I just finished copying and recopied the same data, in Vista I got the same 15MB/s transfer rate. However, in Win 7, the recopy transfer rate skyrocketed to about 200-100MB/s.
     
    Starcub, May 4, 2010
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