I tried VM to VM download/upload each other via SMB. VM to VM traffic does work!
2nd, 3rd.... powered VM can not upload files to the SMB file servers, which ESXi physical NIC connect to.
I will describe my testing.
1, Boot up ESXi server
2, Power-on the 1st-VM (Windows Server 2008)
3, Try to download/upload files from/to a SMB file server (I will call it \\PHY_SMB_SERVER, this server is connected by ESXi physical NIC) . Success!
4, Power-on the 2nd-VM (Windows Server 2008)
5, On 2nd-VM, I try to download/upload files from/to the \\1st-VM\C$. Success!
6, On 2nd-VM, I try to upload a 215M files to the \\PHY_SMB_SERVER. Failed! You can see the screenshot.
1.jpg [ 36.91 KiB | Viewed 1467 times ]
2.jpg [ 20.02 KiB | Viewed 1466 times ]
7, On 2nd-VM, I try to upload the screenshot (1.jpg and 2.jpg) to \\PHY_SMB_SERVER. It seemed succeed, because Windows did not report any error, but when I open the 1.jpg and 2.jpg on PHY_SMB_SERVER via native logon, the image is damaged. You can see the attached BAD.RAR file. I believe it is due to the abnormal network transfer.