Setting the Max Memory in SQL Server

Here is a quick post about setting the max memory in SQL Server so that you got no worries if you forgot to set this at installation.

I get it we all been there before. This was a step I over looked when starting out with SharePoint many years ago. However I did recently have this come up in a discussion and I remembered and thought I should do this in PowerShell to exercise my scripting technique. It seems to be best used as an expression.

Disclaimer:

Test this in a dev environment first and not production to ensure compatibility with versions and the .net framework:

The Nitty Gritty:

Function Set-SQLServerMemory
{
    [CmdletBinding()]
    Param(
            [parameter(ValueFromPipelineByPropertyName)][string[]]$ServerName,
            [parameter(ValueFromPipelineByPropertyName)][int[]]$MaxMemory,
            [parameter(ValueFromPipelineByPropertyName)][int[]]$MinMemory




         )
    Begin{
    write-verbose "Begining"
     $report=@()
     #$report+=New-Object -TypeName psobject -Property @{Servername="testServer"; TotalMemory=8076;} | select Servername,TotalMemory
     $servernames=$servername

    }

    Process{
    write-verbose "Begining the Process"

    foreach($ServerName in $ServerNames){
    Write-Verbose "In The Loop"
            $Rawmemorytotal = Get-wmiobject -ComputerName $ServerName -class Win32_PhysicalMemory | Measure-Object -Property Capacity -Sum
            $TotalMemory=$Rawmemorytotal.Sum
            $report+=New-Object -TypeName psobject -Property @{ 
                                                                ServerName="$Servername" 
                                                                TotalMemory=($Rawmemorytotal.Sum / 1MB)
                                                              }
    
            $min_os_memory = 2048 
            if( $TotalMemory -le $min_os_memory) {
                Write-Host "Memory too Low, Server could be Serverly impacted." -ForegroundColor Red 
            }
            if ($TotalMemory -ge 8192) {
                $sql_mem = $TotalMemory - $min_os_memory
            } else {
                $sql_mem = $TotalMemory * 0.79 ;
            }

    if ($MinMemory -eq 0) {
            $MinMemory = $MaxMemory
        }
        [reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.Smo") | Out-Null
        $SQLServer = New-Object Microsoft.SQLServer.Management.Smo.Server($SQLInstanceName)
        if ($SQLServer.status) {
              $SQLServer.Configuration.MaxServerMemory.ConfigValue = $MaxMemory
            $SQLServer.Configuration.MinServerMemory.ConfigValue = $MinMemory   
            $SQLServer.Configuration.Alter()
            }#end if

    
        }#end Foreach
        }

        End{
        return $report | select Servername,TotalMemory
        #return [int]$sql_mem ;  

        }
}