You can view all Single Root I/O Virtualization (SR-IOV) devices mapped to your virtual machines on the Hardware Resource page. The SR-IOV interface is a hardware specification that allows a single PCIe device, such as a network adapter, to appear as multiple physical devices to the hypervisor. Because each device is directly assigned to an instance, it can bypass the hypervisor and virtual switch layer to achieve low latency and performance matching in nonvirtualized environments. SR-IOV achieves this through the following types of functions:
-
Physical Function (PF): These are PCIe devices that have SR-IOV capabilities. PFs are managed and configured in the same way as PCIe devices.
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Virtual Function (VF): These are lightweight PCIe functions that only process I/O. Because each VF is derived from a PF, the device hardware limits the number of VFs a device can have. A VF shares one or more hardware resources of the device, such as a memory or network port.
The following table lists all SR-IOV functions you can view in Hardware Resource:
|
No. |
Settings |
Description |
|---|---|---|
|
1 |
Hardware Devices |
Lists all the SR-IOV devices that are mapped to your virtual machine (VM). |
|
2 |
Physical Function/Virtual Function |
Displays the physical function (PF) or virtual function (VF) configured to the SR-IOV device. |
|
3 |
Virtual Machine |
Shows the virtual machines that are mapped to the PF or VF. |
|
4 |
Resize |
Click |
|
5 |
Show or Hide |
Click |
to enlarge or minimize the
SR-IOV device panel window.
to show or hide the list of
SR-IOV device details.For details on how to configure an SR-IOV device to a VM, see the Virtualization Station user guide.