topic Re: Can't user get-ncdisk command in Microsoft Virtualization Discussions

Can't user get-ncdisk command

AllenChang — Mon, 13 Oct 2025 08:45:49 GMT

I use Powershell to create a script,
ONTAP Powershell Version is 9.14.1

I user get-ncdisk command to get disk information,

and my environment is simulator,

At the beginning the command [get-ncdisk] can be use,

but suddenly I can't use get-ncdisk,

and system force me to use -zapi to performance,

but zapi can't get some information,
for example when I don't -use -zapi, I can see Shelf ID
but If I use -zapi, the Shelf ID Field is empty,
how can fix this problem?

Re: Can't user get-ncdisk command

chamfer — Tue, 14 Oct 2025 21:40:15 GMT

Hi @AllenChang,

Can you advise what version of the ONTAP Simulator you are using?

Re: Can't user get-ncdisk command

AllenChang — Wed, 15 Oct 2025 00:59:06 GMT

Hi Chamfer
9.12.1
Because the customer's machine is also 9.12.1

Re: Can't user get-ncdisk command

chamfer — Wed, 15 Oct 2025 06:00:50 GMT

Thanks for the confirmation @AllenChang,

Just to understand your problem, are you saying that you can user get-ncdisk initially and then it stops working?

If you are trying to replicate the customer's environment have you updated the ONTAP Simulator to be the correct P version e.g. 9.12.1P4?

Re: Can't user get-ncdisk command

AllenChang — Wed, 15 Oct 2025 06:25:43 GMT

Hi Charmfer：

It will say
get-ncdisk : Object reference not set to an instance of an object.

and my simulator version is 9.12.1

Re: Can't user get-ncdisk command

AllenChang — Wed, 15 Oct 2025 08:39:42 GMT

How to find P version ?

Re: Can't user get-ncdisk command

chamfer — Wed, 15 Oct 2025 22:12:51 GMT

Hi @AllenChang,

I don't understand exactly what you are asking so I will provide two answers:

1) If you would like to know what P version you are running on ONTAP, just use the "ver" command from the CLI and it will tell you.

2) If you would like to know how to download P (patch) version then you can download them from here NetApp Support Site - All Products - ONTAP 9 (Downloads)

If you would like to learn about ONTAP upgrades you can read here Learn about ONTAP upgrade

Re: Can't user get-ncdisk command

chamfer — Wed, 15 Oct 2025 22:16:53 GMT

Hi @AllenChang ,

Reference here Solved: Add-NcQuota shows Object reference not set to an instance of an object error - NetApp Community

Credit: antoniosarco

"The message "Object not set to instance of Object" means that you are trying to use an object which has not been initialized. That is, you either set it to null, or you never set it to anything at all. The runtime throwing a NullReferenceException always means the same thing: you are trying to use a reference. The reference is not initialized (or it was initialized, but is no longer initialized).

Antonio"