I'd like to have better understanding what's going on when I'm doing the following: 1. From my laptop (W7) open network share on a server \\server1\share (W2008R2) 2. Right click on a folder "Folder1" under that path choose Copy. 3. Right click on empty aria of the same folder and choose Paste. It creates a folder with name "Folder1 - Copy", the question is does the copy traffic go from the server to my laptop and back, or it stays inside the server? Does the network throughput affects the process? It was working quite fast, but at some point in became pretty slow and I have no idea why. Where to look at: the server, network, the laptop? Thanks in advance.

Vitaly Litovchenko wrote: I'd like to have better understanding what's going on when I'm doing the following: 1. From my laptop (W7) open network share on a server \\server1\share (W2008R2) 2. Right click on a folder "Folder1" under that path choose Copy. 3. Right click on empty aria of the same folder and choose Paste. It creates a folder with name "Folder1 - Copy", the question is does the copy traffic go from the server to my laptop and back, or it stays inside the server?  Does the network throughput affects the process? It was working quite fast, but at some point in became pretty slow and I have no idea why. Where to look at: the server, network, the laptop? Thanks in advance.  The copy operation in your case goes over the network, that means that each packet is read from disk, then sent to your laptop then sent back to your server and then written to the same disk. If it would be a move operation no real data would be moved if the move source and the move target are on the same volume - just the file pointers would be rearranged. Therefore in your situation the network throughput affects the process but maybe this process is more influenced by the adverse effect you get, if you are reading and writing simultaneaously to the same physical disk as this means that between each change from read to write you have to reposition the disk head physically. If you want to measure the influence of your network try the copy process directly on the server (via RDP) versus over the network. Wolfgang

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Thanks WolfP for your answer.