Copying to external Hdd very slow

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  1. Lucske
    Posts : 16
    windows 10 pro
       New #1

    Copying to external Hdd very slow


    Hi all,

    I have a I5 desktop 8gb memory, with a 256 ssd startup-disk (C:\) and an internal Hdd 2Tb (D:\) where all my files are stored.
    The windows-version is 10 pro.
    Now i have an external Hdd 3Tb connected via USB3 to my pc.
    I 'd like to make a 1on1 copy of all my D-drive to the 3Gb drive.
    So i open explorer and rightclick on the D:-drive and select "Copy".
    The in click on the 3Gb drive and in the right pane i rightclick and select "Paste".

    A small windows then opens and the files are counted before the copying begins...
    Then i see a transfer-rate of about 350 bytes/s !!
    The last time i tryed this, it had to copy about 370Gb of files .
    After more than 24 hours it was at 57% !

    Is that a normal time for this ?
    I must say that the majority of files is quit small (around 60Kb/file)
    But it looks very slow to me...
    Am i doing something wrong ?
    Can i speed things up a bit ?

    Thanks for thinking along...
    Bye,
    Luc
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  3. Arc
    Posts : 1,626
    Microsoft Windows 10 Home
       New #2

    Lucske said:
    ......... i see a transfer-rate of about 350 bytes/s !!

    After more than 24 hours it was at 57% !
    That is very abnormal.

    The data transfer speed varies depending on the USB type (2 or 3) of the target device. Still it is extremely slow.
    You can use TeraCopy and see if it makes any difference there.
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  4. f14tomcat
    Posts : 56,830
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       New #3

    Arc said:
    That is very abnormal.

    The data transfer speed varies depending on the USB type (2 or 3) of the target device. Still it is extremely slow.
    You can use TeraCopy and see if it makes any difference there.
    I would also check to make sure the ext drive has write caching enabled. An example is:Copying to external Hdd very slow-2016-03-26_14h45_40.png
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  6. Arc
    Posts : 1,626
    Microsoft Windows 10 Home
       New #4

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  7. Lucske
    Posts : 16
    windows 10 pro
    Thread Starter
       New #5

    Thanks for replying !

    I have the writecache enabled for the destination drive.
    In fact, i set this so for all the drives.
    Since i did that there is some improvement noticable.
    But it still is very slow.
    I used Terracopy on earlier pc's and at that time it wasn't that much faster.
    Bud i could try that again...

    Thanks ;-)

    Luc
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  8. f14tomcat
    Posts : 56,830
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       New #6

    Lucske said:
    Thanks for replying !

    I have the writecache enabled for the destination drive.
    In fact, i set this so for all the drives.
    Since i did that there is some improvement noticable.
    But it still is very slow.
    I used Terracopy on earlier pc's and at that time it wasn't that much faster.
    Bud i could try that again...

    Thanks ;-)

    Luc
    There is another good alternative. This an oldie-but-goodie MS program from Win 7 days. I use it daily to synchronize folders to a backup. It is fast and reliable, and it works. Hasn't been updated in a while, but MS still has it for download. Sync Toy X64.
    Download SyncToy 2.1 from Official Microsoft Download Center
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  9. Lucske
    Posts : 16
    windows 10 pro
    Thread Starter
       New #7

    Thanks,

    I installed it right away...
    I'm still copying the files in the old "slow" way at this moment (and the next 2 days or so).
    But after that i will try and see what it does..
    Thanks again ;-)

    Luc
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  10. Fafhrd
    Posts : 1,983
    Windows 10 x86 14383 Insider Pro and Core 10240
       New #8

    Copying at userlevel in Windows is slow and unreliable. Better to image the source drive and apply the image to the target, particularly if a lot of small files are involved. Standard free tools like Macrium and Aomei are great at this.

    You can find the tools here, on a convenient bootable iso:
    Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums
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  12. Lucske
    Posts : 16
    windows 10 pro
    Thread Starter
       New #9

    A strange thing happened....
    when the normal copying procedure was at 23%, the window closed.
    I then compared both the locations and everything was copyed to the 3gb disk.
    I guess the counter wasn't counting the files and transferrate very accurate.
    so now i'm going to test the microsoft tool to keep it updated.
    Thanks for the help 😉👍!

    Greets,
    Luc
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  13. jimbo45
    Posts : 11,247
    Windows / Linux : Arch Linux
       New #10

    Hi there.

    USB3 should work much faster than your speeds indicate --even USB2 should be better.

    Copying concurrently from TWO USB 3 drives to my NAS server (HDD's formatted with XFS, USB3 drives with NTFS) I'm getting a really decent speed.

    Copying to external Hdd very slow-snapshot2.png

    The two external HDD's are the self powered passport type one is 2TB and the other 3 TB so these would be slower than powered USB 3 external drives.

    My OS is CENTOS 7 -- restoring Movies and TV series to my NAS after upgrading HDD's.

    Approx 4TB of data to restore - so I'm not complaining as it's HOME type stuff - not commercial fast SCSI devices or mega sized new type server grade SSD's.

    Windows reports similar data transfer rates too on those USB3 HDD's although NTFS file system is about 10% slower than XFS. My Windows machine though has faster CPU / Bus speed too - NAS server is only a Microserver so doesn't need a whole lot of "OOMPH" - especially for a Home NAS.

    Ensure if you are using a USB 3 Hub that it's got sufficient power. I'm using 2 separate USB3 ports.

    Cheers
    jimbo
    Last edited by jimbo45; 27 Mar 2016 at 07:36.
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