diff --git a/Deployment/MSSQL/SQLServerInstaller.psm1 b/Deployment/MSSQL/SQLServerInstaller.psm1
index 477e38aa..99ddf732 100644
--- a/Deployment/MSSQL/SQLServerInstaller.psm1
+++ b/Deployment/MSSQL/SQLServerInstaller.psm1
@@ -2,6 +2,17 @@ Import-Module '.\OptionParser.psm1'
 Import-Module '.\SQLServerOptionParsers.psm1'
 
 function New-SQLServer {
+    <#
+    .SYNOPSIS
+    Installs new MS SQL Server instance
+
+    .DESCRIPTION
+    Installs new MS SQL Server instance in unattended mode.
+
+    .PARAMETER SetupRoot
+    MS SQL Server installation files root directory. Normally it is just DVD drive name.
+    #>
+
     param(
         [parameter(Mandatory = $true)]
         [string]$SetupRoot
@@ -19,6 +30,17 @@ function New-SQLServer {
 }
 
 function Remove-SQLServer {
+    <#
+    .SYNOPSIS
+    Uninstalls MS SQL Server instance installed with New-SQLServer cmdlet
+
+    .DESCRIPTION
+    Uninstalls MS SQL Server instance installed with New-SQLServer cmdlet in unattended mode
+
+    .PARAMETER SetupRoot
+    MS SQL Server installation files root directory. Normally it is just DVD drive name.
+    #>
+
     param(
         [parameter(Mandatory = $true)]
         [string]$SetupRoot
@@ -34,5 +56,106 @@ function Remove-SQLServer {
         throw "Installation executable exited with code $("{0:X8}" -f $ExitCode)"
     }
 }
+
+function Invoke-SQLText {
+    <#
+    .SYNOPSIS
+    Invokes SQL text
+
+    .DESCRIPTION
+    Invokes SQL text
+
+    .PARAMETER SQL
+    SQL Text
+
+    .PARAMETER User
+    SQL Server user name
+
+    .PARAMETER SQL
+    SQL Server user password
+    #>
+    param(
+        [parameter(Mandatory = $true)]
+        [string]$SQL,
+        [string]$User = $null,
+        [string]$Password = $null
+    )
+
+    $Binary = Get-Command "sqlcmd.exe"
+
+    $tempFile = [IO.Path]::GetTempFileName()
+    $tempFile = Get-Item $tempFile
+    Set-Content -Path $tempFile -Value $SQL
+
+    $CommandLine = @('-i', "`"$($tempFile.FullName)`"")
+    if (($User -ne $null) -and ($User -ne '')) {
+        $CommandLine = $CommandLine + '-U'
+        $CommandLine = $CommandLine + $User
+        $CommandLine = $CommandLine + '-P'
+        $CommandLine = $CommandLine + $Password
+    }
+
+    Write-Host "Executing: `"$($Binary.Path)`" $($CommandLine -join ' ')"
+    $process = [System.Diagnostics.Process]::Start($Binary, $CommandLine)
+    $process.WaitForExit()
+    $process.Refresh()
+
+    $ExitCode = $process.ExitCode
+    if ($ExitCode -ne 0) {
+        throw "SQLCMD.EXE returned with exit code $ExitCode"
+    }
+   
+    Remove-Item $tempFile
+}
+
+function Initialize-MirroringEndpoint {
+    <#
+    .SYNOPSIS
+    Prepares SQL Server for database mirroring
+
+    .DESCRIPTION
+    ToDo: Describe
+    #>
+
+    param(
+        [parameter(Mandatory = $true)]
+        [String]$EncryptionPassword,
+        [parameter(Mandatory = $true)]
+        [String]$WorkDir
+    )
+
+    $Folder = Get-Item $WorkDir
+
+    $H = $Env:COMPUTERNAME -replace '[^A-Za-z0-9_]', ''
+    
+    $CreateMasteeKey = "USE master;
+                        CREATE MASTER KEY ENCRYPTION BY PASSWORD = '$EncryptionPassword';
+                        GO
+
+                        CREATE CERTIFICATE ${H}_cert WITH SUBJECT = '$H certificate';
+                        GO
+
+                        CREATE ENDPOINT Endpoint_Mirroring 
+                            STATE = STARTED
+                            AS TCP (
+                                LISTENER_PORT=7024
+                                , LISTENER_IP = ALL
+                            ) 
+                            FOR DATABASE_MIRRORING ( 
+                                AUTHENTICATION = CERTIFICATE ${H}_cert
+                                , ENCRYPTION = REQUIRED ALGORITHM AES
+                                , ROLE = ALL
+                            );
+                        GO
+
+                        BACKUP CERTIFICATE ${H}_cert TO FILE = '$Folder\certificate.cer';
+                        GO
+                        "
+
+    Invoke-SQLText -SQL $CreateMasteeKey
+}
+
 Export-ModuleMember -Function New-SQLServer
 Export-ModuleMember -Function Remove-SQLServer
+Export-ModuleMember -Function Invoke-SQLText
+Export-ModuleMember -Function Initialize-MirroringEndpoint