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Table Of Contents
Add SCSI Controllers
You can add SCSI controllers to an existing virtual machine by adding hard disks on unused SCSI Bus
numbers.
Adding a new hard disk on an unused SCSI bus number automatically creates a new SCSI controller.
Prerequisites
Sufficient privileges to edit the virtual machine.
Procedure
1 Right-click on a virtual machine and select Edit Settings.
2 Select the Hardware tab.
3 Click Add.
4 Select Hard Disk and click Next.
5 Proceed through the wizard, selecting options that suit your needs.
6 In the Advanced Options page > Virtual Device Node section, select an unused SCSI Bus number.
For example, bus and device numbers 0:0 - 0:15 are used by the initial SCSI controller. The second SCSI
controller uses bus and device numbers 1:0 - 1:15.
7 On the Ready to Complete page, click Finish.
The new hard disk and new SCSI controller are simultaneously created.
Change the SCSI Bus Sharing Configuration in the vSphere Client
You can set the type of SCSI bus sharing for a virtual machine and indicate whether the SCSI bus is shared.
Depending on the type of sharing, virtual machines can access the same virtual disk simultaneously on the
same server or on any server.
You can change the SCSI controller configuration for a virtual machine on an ESXi host only.
Procedure
1 In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.
2 Click the Hardware tab and select a SCSI Controller in the hardware list.
3 Select the type of sharing in the SCSI Bus Sharing list.
Option Description
None
Virtual disks cannot be shared by other virtual machines.
Virtual
Virtual disks can be shared by virtual machines on the same server.
Physical
Virtual disks can be shared by virtual machines on any server.
4 Click OK to save your changes.
Change the SCSI Controller Type in the vSphere Client
You configure virtual SCSI controllers on your virtual machines to attach virtual disks and RDMs to.
The choice of SCSI controller does not affect whether your virtual disk is an IDE or SCSI disk. The IDE
adapter is always ATAPI. The default for your guest operating system is already selected. Older guest
operating systems default to the BusLogic adapter.
Chapter 15 Configuring Virtual Machines in the vSphere Client
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