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USB harddisk terribly slow

Discussion in 'Linux / BSD / Mac OS X' started by DanTheBanjoman, Sep 24, 2008.

  1. DanTheBanjoman Señor Moderator

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    We have a Western Digital Mybook World here (a Linux based NAS) which needs to be backed up now and then. The simplest way seemed to be hooking a USB disk of equal size to it and doing a diskcopy now and then.
    The theory seemed ok, practically it seems to work as well, with a huge downside: transfer rates are under 2MB/s.
    This is both using dd (preferred method)and cp, according to lsusb the USB bus is running at hispeed. It seems unrelated to the way I mount it (sync/async, whatever), as I tried dd when the drive wasn't mounted and the issue was still there.

    I also attempted to just use cp to a NTFS drive, installed ntfs-3g for this, ntfs-3g won't work at all though, and the default support is read-only.
     
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  2. W1zzard

    W1zzard Administrator Staff Member

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    try to copy /dev/zero to a file on the usb stick, see if that is faster. maybe the reading speed is your limitation
     
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  3. DanTheBanjoman Señor Moderator

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    Network transfers are a lot faster. A gigabit device limited to 2MB/s would be rather silly as well. Not that it's that fast either, but still.
     
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  4. xfire

    xfire

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    you should also install ntfs-3g config which gives you a GUI to mount drives.
     

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