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Table Of Contents
Add a Paravirtualized SCSI Adapter
You can add a VMware Paravirtual SCSI high performance storage controller to a virtual machine to
provide greater throughput and lower CPU use.
VMware Paravirtual SCSI controllers are best suited for environments, especially SAN environments,
running I/O-intensive applications.
For information about SCSI controller maximums and virtual device assignments, see SCSI and SATA
Storage Controller Conditions, Limitations, and Compatibility.
Prerequisites
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Verify that the virtual machine has a guest operating system with VMware Tools installed.
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Verify that the virtual machine compatibility is ESXi 4.x and later.
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Ensure that you are familiar with the VMware Paravirtual SCSI controller type.
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To access boot disk devices attached to a VMware Paravirtual SCSI controller, verify that the virtual
machine has a Windows 2003 or Windows 2008 guest operating system.
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In some operating systems, before you change the controller type, create a virtual machine with an
LSI Logic controller, install VMware Tools, and then change to paravirtual mode.
Procedure
1 Right-click a virtual machine in the inventory and select Edit Settings.
2 On the Virtual Hardware tab, add a paravirtualized SCSI adapter.
Client Steps
vSphere Client a Click the Add New Device button and select SCSI Controller from the drop-
down menu.
b Expand New SCSI controller and from the Change Type drop-down menu,
select VMware Paravirtual.
vSphere Web Client a Select SCSI Controller from the New device drop-down menu at the bottom
of the wizard.
b Click Add.
c Expand New SCSI controller and from the Change Type drop-down menu,
select VMware Paravirtual.
d Click the Change Type button.
The controller appears at the bottom of the Virtual Hardware device list.
3 Click OK.
Add an NVMe Controller
If a virtual machine has multiple hard disks, you can add up to four virtual NVMe controllers to which to
assign the disks. Using a NVMe controller significantly reduces the software overhead for processing
guest OS I/O, as compared to AHCI SATA or SCSI controllers.
vSphere Virtual Machine Administration
VMware, Inc. 117