I see a lot of posts on monitoring sql server that use a “Servers.txt” to iterate the server names.  We (and I imagine a lot of other places as well) store our server information in sql server and not a text file.  Here is how you get said list of servers directly from sql server instead of a text file:

Set-Location SQLSERVER:\SQL\SERVERNAME\DEFAULT

$Servers = Invoke-Sqlcmd -Query "SELECT

       ServerName      

   FROM dbo.[Servers];"

foreach($server in $Servers)

{

       Write-Host $server.ServerName

}

You’ll need to load the sql server snapin for this to work correctly.