VMware 4817V62 - vSphere - PC Administration Manual page 162

vSphere Basic System Administration
Add a PCI Device
VMDirectPath I/O allows a guest operating system on a virtual machine to directly access physical PCI and
PCIe devices connected to a host. Each virtual machine can be connected to up to two PCI devices.
PCI devices connected to a host can be marked as available for passthrough from the Hardware Advanced
Settings in the Configuration tab for the host.
Prerequisites
To use VMDirectPath, the host must have Intel
I/O Virtualization Technology (IOMMU) enabled in the BIOS. In order to add PCI devices to a virtual machine,
the devices must be connected to the host and marked as available for passthrough. In addition, PCI devices
can be added only to virtual machines with hardware version 7.
Procedure
1 Select the virtual machine from the inventory panel and click Virtual Machine > Edit Settings.
2 On the Hardware tab, click Add.
3 In the Add Hardware wizard, select PCI Device and click Next.
4 Select the passthrough device to connect to the virtual machine from the drop-down list and click Next.
5 Click Finish.
Add a Paravirtualized SCSI Adapter
Paravirtual SCSI (PVSCSI) adapters are high-performance storage adapters that can provide greater
throughput and lower CPU utilization. PVSCSI adapters are best suited for environments, especially SAN
environments, running I/O-intensive applications. PVSCSI adapters are not suited for DAS environments.
Prerequisites
An existing virtual machine with a guest operating system and VMware Tools installed. Paravirtual SCSI
adapters do not support bootable disk. Therefore, the virtual machine must be configured with a primary SCSI
adapter to support a disk where the system software is installed.
Procedure
1 Right-click on the virtual machine and select Edit Settings.
2 Click Add.
3 Select SCSI Device and click Next.
4 Select a SCSI device.
5 Select an unused Virtual Device Node.
6 Click Next.
7 Review your selections and click Finish.
A new SCSI device and a new SCSI controller are created.
8 Select the new SCSI controller and click Change Type.
9 Select VMware Paravirtual and click OK.
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Virtualization Technology for Directed I/O (VT-d) or AMD
VMware, Inc.