System Center Orchestrator: "Modify VM Disk" activity from the VMware vSphere IP

Valentin Nedeianu 0

Hello,

I am trying to implement an automatic disk increase for a VMware machine using a SCORCH runbook; one of the activities from the VMware vSphere integration pack looks like could do the job: "Modify VM Disk". Unfortunately, there is a required field named "SCSI Unit Key" in the properties of the activity that I couldn't find information about and don't know what should contain or where to get that information from.

If you used this activity, I would appreciate some hints.

Thank you!

2 answers

XinGuo-MSFT 20,886 Reputation points

2025-01-31T08:33:18.26+00:00
Hi,

To find the SCSI Unit Key for a virtual disk in VMware vSphere, follow these steps:

Open the vSphere Client and navigate to the virtual machine.

Select the VM and go to the "Edit Settings" option.

In the "Virtual Hardware" tab, locate the virtual disk you want to modify.

The SCSI ID (which includes the SCSI Unit Key) will be displayed in the "Virtual Device Node" section.
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Valentin Nedeianu 0 Reputation points

2025-02-04T19:32:05.5666667+00:00

@XinGuo-MSFT thank you for your answer!

In the "Virtual Device Node" there are two fields: one that shows the SCSI controller (in my case "SCSI Controller 0") and a second one "SCSI(0:1) Hard disk 2".

I'm guessing that the SCSI Unit Key is "1" from the second field. It is confusing, because in VMware there is an actual SCSI key that you can find using the following command:

Get-VM -Name "MachineName" | Get-ScsiController -Name "SCSI controller 0" | fl *

Unfortunately, the activity is not working with either key: I'm getting the following error:

In Orchestrator:

"Extend disk task failed for the disk [...] VM/VM1_1.vmdk.

Exception: IntegrationPackException Target site: ServiceBase.Execute

Stack trace: at Microsoft.SystemCenter.Orchestrator.VIQIK.ServiceBase.Execute(IActivityRequest request, IActivityResponse response)"

In the VMware console:

"A specified parameter was not correct: dcPath"
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XinGuo-MSFT 20,886 Reputation points

2025-02-05T02:33:56.2+00:00

Hi,

Please attempt to retrieve the SCSI Unit Key within the guest operating system.
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System Center Orchestrator: "Modify VM Disk" activity from the VMware vSphere IP

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