10 GbE virtual NIC for VMs

1000THR Lv1Posted Jan-28-2026 22:32

Hi,
I'm trying to perform an agentless backup with VInchin using our Sangfor SCP console as the backup source.
Everything seems to work, but I noticed transfer speeds of around 85-90 MB/s, indicating a gigabit connection between Vinchin and SCP, even though everything is connected over 10GbE links, leading me to believe the SCP Vm is using a virtualized 1GbE NIC.
Is it possible to edit the SCP VM to allow for a virtualized 10GbE? Or is the only solution to dedicate a physical interface to SCP?

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No. You can’t (and shouldn’t) modify the SCP VM to act like a 10Gb data interface. SCP is a management VM, and its virtual NIC and internal design limit real backup throughput to around 1 Gbps, even in a 10GbE environment.

Adding a physical 10Gb NIC to SCP also won’t properly solve it and isn’t recommended.

Solution:
Don’t use SCP as the backup data path. Configure Vinchin to back up directly from the HCI hosts (CVK nodes) over a 10Gb network. SCP should only handle control/API tasks, not the actual backup traffic.
Is this answer helpful?
Humayun Ahmed Lv3Posted Jan-29-2026 11:51
  
You cannot change SCP vNIC type, Set vNIC speed to 10Gb, Add additional high-speed NICs.
Muhammad Abid Lv2Posted Jan-29-2026 13:45
  
No. You can’t (and shouldn’t) modify the SCP VM to act like a 10Gb data interface. SCP is a management VM, and its virtual NIC and internal design limit real backup throughput to around 1 Gbps, even in a 10GbE environment.

Adding a physical 10Gb NIC to SCP also won’t properly solve it and isn’t recommended.

Solution:
Don’t use SCP as the backup data path. Configure Vinchin to back up directly from the HCI hosts (CVK nodes) over a 10Gb network. SCP should only handle control/API tasks, not the actual backup traffic.

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