Merge pull request #237562 from sooryar12/patch-1

Update backup-mabs-unattended-install.md

Author: ttorble

articles/backup/backup-mabs-unattended-install.md

@@ -1,6 +1,6 @@
 ---
-title: Silent installation of Azure Backup Server V2
-description: Use a PowerShell script to silently install Azure Backup Server V2. This kind of installation is also called an unattended installation.
+title: Silent installation of Azure Backup Server V4
+description: Use a PowerShell script to silently install Azure Backup Server V4. This kind of installation is also called an unattended installation.
 ms.topic: conceptual
 ms.date: 11/13/2018
 author: jyothisuri
@@ -10,13 +10,20 @@ ms.author: jsuri
 
 Learn how to run an unattended installation of Azure Backup Server.
 
-These steps don't apply if you're installing Azure Backup Server V1.
+These steps don't apply if you're installing older version of Azure Backup Server like MABS V1, V2 and V3.
 
 ## Install Backup Server
 
-1. On the server that hosts Azure Backup Server V2 or later, create a text file. (You can create the file in Notepad or in another text editor.) Save the file as MABSSetup.ini.
-
-2. Paste the following code in the MABSSetup.ini file. Replace the text inside the brackets (\< \>) with values from your environment. The following text is an example:
+1. Ensure that there's a directory under Program Files called "Microsoft Azure Recovery Services Agent" by running the following command in an elevated command prompt.
+   ```cmd
+   mkdir "C:\Program Files\Microsoft Azure Recovery Services Agent"
+   ```
+2. Install the pre-requisites for MABS ahead of time in an elevated command prompt. The following command can result in an automatic server restart, but if that does not happen, a manual restart is recommended.
+   ```cmd
+   start /wait dism.exe /Online /Enable-feature /All /FeatureName:Microsoft-Hyper-V /FeatureName:Microsoft-Hyper-V-Management-PowerShell /quiet
+   ```
+3. On the server that hosts Azure Backup Server V4 or later, create a text file. (You can create the file in Notepad or in another text editor.) Save the file as MABSSetup.ini.
+4. Paste the following code in the MABSSetup.ini file. Replace the text inside the brackets (\< \>) with values from your environment. The following text is an example:
 
    ```text
    [OPTIONS]
@@ -28,18 +35,17 @@ These steps don't apply if you're installing Azure Backup Server V1.
    SQLMachinePassword=<admin password>
    SQLMachineDomainName=<machine domain>
    ReportingMachineName=localhost
-   ReportingInstanceName=<reporting instance name>
+   ReportingInstanceName=SSRS
    SqlAccountPassword=<admin password>
    ReportingMachineUserName=<username>
    ReportingMachinePassword=<reporting admin password>
    ReportingMachineDomainName=<domain>
-   VaultCredentialFilePath=<vault credential full path and complete name>
+   VaultCredentialFilePath=<vault credential full path and complete name, without spaces in both>
    SecurityPassphrase=<passphrase>
-   PassphraseSaveLocation=<passphrase save location>
+   PassphraseSaveLocation=<passphrase save location, an existing directory where the passphrase file can be created>
    UseExistingSQL=<1/0 use or do not use existing SQL>
    ```
-
-3. Save the file. Then, at an elevated command prompt on the installation server, enter this command:
+5. Save the file. Then, at an elevated command prompt on the installation server, enter this command:
 
    ```cmd
    start /wait <cdlayout path>/Setup.exe /i  /f <.ini file path>/setup.ini /L <log path>/setup.log