From 33d408aee446ba0cd13a5a16b467ced3f90ffefa Mon Sep 17 00:00:00 2001
From: Simon Heather <32168619+X-Guardian@users.noreply.github.com>
Date: Thu, 18 Apr 2019 12:39:33 +0100
Subject: [PATCH] Test-Is NanoServer speed improvement

Replace Get-ComputerInfo with Registry Value Test
---
 DscResources/CommonResourceHelper.psm1 | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

diff --git a/DscResources/CommonResourceHelper.psm1 b/DscResources/CommonResourceHelper.psm1
index f1f9d3a..77018f2 100644
--- a/DscResources/CommonResourceHelper.psm1
+++ b/DscResources/CommonResourceHelper.psm1
@@ -8,23 +8,16 @@ function Test-IsNanoServer
     [CmdletBinding()]
     param ()
 
-    $isNanoServer = $false
-
-    if (Test-CommandExists -Name 'Get-ComputerInfo')
+    $ServerLevels = Get-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Server\ServerLevels'
+    If ($ServerLevels.NanoServer -eq 1)
     {
-        $computerInfo = Get-ComputerInfo -ErrorAction 'SilentlyContinue'
-
-        if ($null -ne $computerInfo)
-        {
-            $computerIsServer = 'Server' -ieq $computerInfo.OsProductType
-
-            if ($computerIsServer)
-            {
-                $isNanoServer = 'NanoServer' -ieq $computerInfo.OsServerLevel
-            }
-        }
+        $isNanoServer = $True
     }
-
+    Else
+    {
+        $isNanoServer = $false
+    }
+    
     return $isNanoServer
 }