To use Robocopy, open Start, type Command Prompt and click on Command Prompt from the search results. It makes it much easier and faster, especially over a network. So, in short: connect both HDDs to the USB3 hub, connect the hub to the USB3 port and use a copy utility. Robocopy (Robust File Copy) This is a built-in command line tool in Windows, which offers more power when you need to run repetitive and/or complicated file copy processes. Please note carefully not only the numbers, but also the units of measurement. Please see the below table to compare the maximum performance of each interface. ![]() The last step is especially helpful if you dont have a physical Windows 10 copy for reinstallation. After the disk imaging is complete, you can close the wizard and create a system repair disk. It can take some time to finish depending on your backups size. An added benefit is that it automatically checks the file integrity of the copy by calculating a checksum. Seagate Support KB Articles How fast should an external drive be How fast should an external drive be Some advice for correctly setting expectations for USB device performance. Click 'Start backup' to begin the disk cloning process. ![]() Use a specialized application like TeraCopy which uses (it's own) buffering to maximize throughput. The maximum transfer rate of a USB2 HDD is around 30 MBps, and on USB3 still x10.ģ- if you use Windows explorer this can be very, very slow, mainly if the number of files to copy is a couple of 10.000s. You can attain this speed only when copying sequentially large files, copying many small files will need a lot of mechanical movements of the lever arm in the HDD which will reduce the transfer speed substantially.Ģ- if your choice is between USB3 (5000 Mbps) vs. There are 3 potential bottlenecks for this:Ģ- the speed of the interface (USB, SATA)ģ- the speed of the OS and the application used for copyingġ- harddisks today are capable of ~ 100 MBps, notebooks HDDs as used in external 2.5" cases maybe a bit slower (60-80 MBps).
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