internal/Resolve-NetBiosName.ps1

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Function Resolve-NetBiosName
{
 <#
.SYNOPSIS
Internal function. Takes a best guess at the NetBIOS name of a server.         
 #>

    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [Alias("ServerInstance", "SqlInstance")]
        [object]$SqlServer,
        [System.Management.Automation.PSCredential]$SqlCredential
    )
    
    $server = Connect-SqlServer -SqlServer $SqlServer -SqlCredential $SqlCredential
    $servernetbios = $server.ComputerNamePhysicalNetBIOS
    
    if ($servernetbios -eq $null)
    {
        $servernetbios = ($server.name).Split("\")[0]
        $servernetbios = $servernetbios.Split(",")[0]
    }
    
    return $($servernetbios.ToLower())
}