6.0

Add a Paravirtual SCSI Controller in the VMware Host Client
You can add a VMware Paravirtual SCSI high performance storage controller to provide greater throughput
and lower CPU utilization.
VMware Paravirtual SCSI controllers are best suited for environments, especially SAN environments, that
run I/O-intensive applications.
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 has hardware version 7 or later.
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Familiarize yourself with VMware Paravirtual SCSI limitations. See vSphere Virtual Machine
Administration .
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To access boot disk devices aached 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 you must create a virtual machine
with an LSI Logic controller and install VMware Tools.
Power o the virtual machine.
Procedure
1 Click Virtual Machines in the VMware Host Client inventory.
2 Right-click a virtual machine in the list and select Edit  from the pop-up menu.
3 On the Virtual Hardware tab, click Add other device and select SCSI Controller from the drop-down
menu.
The new SCSI Controllers appears in the Hardware list.
4 Click on the New SCSI Controller and select VMware Paravirtual from the drop-down menu.
5 Click Save.
Add a SATA Controller to a Virtual Machine in the VMware Host Client
If a virtual machine has multiple hard disks or CD/DVD-ROM devices, you can add up to three additional
SATA controllers to assign the devices to. When you assign the devices to dierent controllers, you can
improve performance and avoid data trac congestion. You can also add controllers if you need to exceed
the thirty-device limit for a single controller.
You can boot virtual machines from SATA controllers and use them for large-capacity virtual hard disks.
Not all guest operating systems support AHCI SATA controllers. Typically, when you create virtual
machines with ESXi 5.5 and later compatibility and Mac OS X guest operating systems, a SATA controller is
added by default for the virtual hard disk and CD/DVD-ROM devices. Most guest operating systems,
including Windows Vista and later, have a default SATA controller for CD/DVD-ROM devices. For
verication, see the appropriate VMware Compatibility Guide at
hp://www.vmware.com/resources/compatibility.
Prerequisites
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Verify that the virtual machine compatibility is ESXi 5.5 and later.
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Verify that you are familiar with storage controller behavior and limitations. See vSphere Virtual Machine
Administration.
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Verify that you have the Virtual machine..Add or remove device privilege on the virtual
machine.
vSphere Single Host Management - VMware Host Client
66 VMware, Inc.