Owner's manual

QLogic 8300 Series Converged Network Adapters Ooad the VM Kernel from
Switching Virtual NICs
Single Root I/O Virtualizaon is a standard that allows one PCI Express (PCIe) adapter to be presented as
mulple separate logical devices to VMs for paroning adapter bandwidth. The hypervisor manages the
Physical Funcon (PF) while the Virtual Funcons (VFs) are exposed to the VMs. In the hypervisor, SR-IOV-
capable network devices oer the benets of direct I/O, which includes reduced latency and reduced host
CPU ulizaon. With SR-IOV, pass-through funconality can be provided from a single adapter to mulple
VMs through VFs. To deploy SR-IOV today, an organizaon needs to ensure a minimum level of infrastructure
(server hardware and OS) support for SR-IOV. In contrast, QLogic NPAR technology can similarly be used
today without the minimum levels of dependencies of SR-IOV.
Low-Latency Connecvity
Latency is the me between the start and compleon of one acon
measured in microseconds (µs).
Latency
With SR-IOV enabled on a 10GbE NIC, pass-through funconality can be provided from a single adapter to
mulple VMs through VFs.
Implemenng Pass-Through Funcons with SR-IOV
8300 Series CNAs