How to add a Second SCSI Controller to a VM

Since a second SCSI adapter is mandatory for Microsoft Clustering Services running in VMware, and it will also provide better performance for any I/O intensive virtual machine like a database server, file server, etc; adding a second controller may be a necessity or valuable option for us. Here is how it can be done:

• After creating the VM we need to “Edit” its settings and select to “Add...” a new device

• We then choose “Hard Disk” (not SCSI device) and click “Next”

• We accept the defaults and click “Next” (unless we whish to re-use an existing vDisk)

• We input the size and move on to the next screen

• In here we need to select a different SCSI node so…

• We are going to choose “SCSI (1:0)” and then click “Next”

• Now we complete the Add Hardware Wizard by clicking “Finish” and then…

• We will be back to the VM Properties where, after clicking “OK”, the changes are going to be committed

Note: If we select to edit the VM one more time, we will see the second SCSI Controller

Posted by Gabriel Maciel