copy and paste runs very slowly and never did before.

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  1. Posts : 36
    Win 10
       #1

    copy and paste runs very slowly and never did before.


    I had to copy and paste a very important file to my external backup hard drive. I do this at least once a month. Last month the file was 121GB and took 7 hours to transfer which is normal. Maximum amount of speed was in MB/s.

    This month file size was 122GB and took 3 1/4 days to finish. Maximum amount of speed during transfer was about 710 KB/s.

    Other than a recent MS update,I did nothing to the computer. What would cause such a drastic slowing of the transfer?
    How would i go about trying to fix this problem? I have Win 10 64 bit, version: 1903 (OS Build 18362.535) . Thank you. Dave
      My Computer

  2. thomaseg1's Avatar
    Posts : 13,266
    Windows 10 Pro (x64) 20H2 19042.804 & 21327.1000
       #2

    Your times both stated aren't very good .
    Is this a usb or network drive your moving to?
    Usb 2.0 or 3.0?
    What is the make and model of your computer?

    try another port. preferably a 2.0 or 3.0 port
    you should also check both drives for errors.

    to give an a example I cleared some backups to a new drive. 3.0
    500 gigs took less the 30 minutes.
      My Computers


  3. Posts : 36
    Win 10
    Thread Starter
       #3

    copy and paste runs very slowly and never did before.


    thomaseg1
    It's a USB 2.0 hub. The computer is an HP Presario P6716F with 12 GB RAM. Internal drive is 2TB. Total usage on the internal drive is 418.2GB. External 2TB drive is accessed thru the USB hub.I don't have a 3.0 interface. It may be slow, but that's the way it's been for as long as I can remember (except for the most recent transfer). I can live with 7 hours but not 3 1/4 days!

    How would you check the drives for errors? Wouldn't the internal drive be the one most likely at fault if there is an error?
    Thank you for your quick reply..
      My Computer


  4. Posts : 1,591
    Windows 10 Home
       #4

    Powered or unpowered, ac adapter, USB hub?
      My Computer

  5. thomaseg1's Avatar
    Posts : 13,266
    Windows 10 Pro (x64) 20H2 19042.804 & 21327.1000
       #5

    Both are capable of errors, and hubs can go bad over time. so can cables.
    try a different cable .

    according to your specs you have 6 usb 2.0 ports .
    try directly connecting the drive to the computer by a different port.
      My Computers


  6. Posts : 36
    Win 10
    Thread Starter
       #6

    RolandJS
    Powered through an ac adapter connected through a 4 port hub (to the external hard drive) and then into the PC's front USB port.

    - - - Updated - - -

    thomaseg1
    OK, i'll replace the cable and connect the external drive directly to another PC hub without using the 4 port hub.
    I'll try that either this weekend or very early in the morning when i'm not busy.. DD
      My Computer


  7. eLPuSHeR's Avatar
    Posts : 2,615
    Windows 10 Home x64
       #7

    It's a good idea to turn write cache on external drives too. It can make a huge difference, specially when copying a lot of small files (not your case I know), but always safe eject media.
      My Computer


  8. Posts : 36
    Win 10
    Thread Starter
       #8

    I used the old cable because I didn't have a new one. I connected the cable directly into a port on the front of my computer. I copy and pasted 122 GB yesterday and the speed was for me, the normal (7 hours) . At least it didn't take 3 days which may have just been an anomaly. Wish I knew how to get the speed down to 30 minutes time which thomaseg1 got on four times the amount of Gigs.
      My Computer

  9. jimbo45's Avatar
    Posts : 11,016
    Windows / Linux : Arch Linux
       #9

    Deaf Dave said:
    I used the old cable because I didn't have a new one. I connected the cable directly into a port on the front of my computer. I copy and pasted 122 GB yesterday and the speed was for me, the normal (7 hours) . At least it didn't take 3 days which may have just been an anomaly. Wish I knew how to get the speed down to 30 minutes time which thomaseg1 got on four times the amount of Gigs.
    Hi there

    definitely something wrong

    I'm regularly getting 90 MB/s transfer rate over a fast wifi internet connection over a LAN . Check that USB3 ports enabled and if the external devices need power make sure power is supplied.

    If you have access to another machine test the transfer rate on that -- it's (IMO) unlikely to be defective hardware --that type of hardware usually will work properly or not at all.

    I've regularly copied around 2 -3 TB from NAS to backup external drive in around 4 hours -- approx 1.5 hrs per TB through USB 3 connection.

    Cheers
    jimbo
      My Computer


  10. Posts : 36
    Win 10
    Thread Starter
       #10

    copy and paste runs very slowly and never did before.


    jimbo45
    Thank you for your reply.
    My computer (HP Presario P6716F) is about 8 years old and only has USB 2 ports. I'll have to purchase 3.0 hardware to install into my expansion slot. I'll need to research how to do that.

    Then I'll have to check and see if my external hard drive is USB 3. If not, I'll have to purchase one that is. My research says that 3.0 is about 10 times faster than 2.0. Once I am 3.0 compatible, that should solve the slowness problem.

    Forgot to mention that during the most recent copy & paste the fastest transfer rate was 21 MB/s and the slowest was 10 KB/s.
    Last edited by Deaf Dave; 13 Jan 2020 at 10:41. Reason: more info
      My Computer


 
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