Hello 
I am using XCP-NG to host my VM’s
I plan to install a physical storage server, in order to avoid the virtual hard drives speed issues.
But for that I need speed when I transfer files from my VMs to this physical server. Unfortunatly I only get 50MB/s (bytes not bits). Sometimes it starts at 90MB/s but always ends to drop at 20MB/s or even 9MB/s !
This is how transfers look like on my network:
VM (NIC-1) → Physical Machine A = 90->50->10MB/s (low and drops)
VM (NIC-1) → Physical Machine B = 90->50->10MB/s (low and drops)
VM (NIC-2) → Physical Machine A = 90->50->10MB/s (low and drops)
VM (NIC-2) → Physical Machine B = 90->50->10MB/s (low and drops)
XCP-NG itself → Physical Machine A = 90->50->10MB/s (low and drops)
XCP-NG itself → Physical Machine B = 90->50->10MB/s (low and drops)
Physical Machine B → Physical Machine B = 110->110->110MB/s (high and stable)
NIC-1 is a 1G card shared with multiple VMs
NIC-2 is a 1G card attached directly to one VM
Physical Machines A&B both have 1G card
Here is a small diagram to help illustrate my words:
VLAN for 192.168.180.0/24 is defined in the VM Test, in the physical switch and in the physical machine A not in XCP-NG or XOA
Here is the NIC I use for the VM Test (NFS Client):
Pool Networks
NFS Client Networks
Do you have any ideas why this is happening ? Do you have the same issue ?
If you need more information please ask.
Thank you very much for you answer