Qlogic 2600 Series vSphere 5 Virtual Server Engine Uživatelský manuál stáhnout pdf (Strana 13)

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.

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

Converged

Network

Adapters

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Qlogic 2600 Series vSphere 5 Virtual Server Engine Uživatelský manuál Strana 13