Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.

Lin — Wed, 04 Jun 2025 12:35:49 GMT

The version we are using,

NetApp PowerShell Toolkit version:4.7.0
Windows version: VMWare VM Microsoft Windows Server 2012 R2 Standard

Start Windows PowerShell as Administrator

PS C:\> Import-Module DataONTAP

PS C:\> Connect-NcController IP-Address-of-NetApp (entered login credentials)

PS C:\> Get-NcSystemVersion

NcController                                                                    Value
------------                                                                    -----
xx.xxx.xxx.xxx                                                                  NetApp Release 9.5P2: Thu Mar 14 13:59:39 UTC 2019

PS C:\> Get-NcLun /vol/lun_tstapp1_os_vol_clone_2703*/lun_tstapp1_os*

Path                                           Size   SizeUsed Protocol     Online Mapped Thin Vserver
----                                           ----   -------- --------     ------ ------ ---- -------
/vol/lun_tstapp1_os_vol_clone_2703201...   110.0 GB    95.3 GB linux         True   True False SVMDC5
/vol/lun_tstapp1_os_vol_clone_2703201...   130.0 GB   139.0 MB vmware        True   True False SVMDC5

Two LUNs on the same volume /vol/lun_tstapp1_os_vol_clone_24042019_162813_69,

lun_tstapp1_os (110GB) is the SourceLun (Linux VM)
lun_tstapp1_os_vhd (130B) is mapped to VMWare host and mounted on the Windows VM as N: drive

Here is the error message I got,

PS C:\> ConvertTo-NcVHD -SourceLun /vol/lun_tstapp1_os_vol_clone_24042019_162813_69/lun_tstapp1_os -DestinationVhd N:\tstapp1-os.vhd -SkipUnmap
ConvertTo-NcVHD : Non-negative number required.
Parameter name: byteCount
At line:1 char:1
+ ConvertTo-NcVHD -SourceLun /vol/lun_tstapp1_os_vol_clone_24042019_162813_69/lun_ ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [ConvertTo-NaVhd], ArgumentOutOfRangeException
+ FullyQualifiedErrorId : System.ArgumentOutOfRangeException,DataONTAP.PowerShell.SDK.Cmdlets.HyperV.ConvertToNaVhd

Any Suggestions?

Re: Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.

pandeyji — Tue, 07 May 2019 11:44:47 GMT

Please have a look into following discussion.

https://community.netapp.com/t5/Microsoft-Virtualization-Discussions/ConvertTo-NcVhd-not-working/m-p/62101#M3079

Re: Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.

pandeyji — Tue, 07 May 2019 12:16:12 GMT

Looking at the error you have posted.

ConvertTo-NcVHD : Non-negative number required.

In Virtual environment number (or integer) is used to denote child process workers to service requests.

By default, the number of CPUs available is set as the value for workers.

Positive integer value (typically equal to the number of CPUs).

topic Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required. in Microsoft Virtualization Discussions

Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.

Re: Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.

Re: Ask The Experts: NetApp PowerShell Questions, ConverTo-NcVhd: Non-negative number required.