Recovery Manager for AD Disaster Recovery Edition 10.2 - User Guide

Scanning backups for viruses

Recovery Manager for Active Directory scans BMR and Active Directory backups for malware as a part of the verification process (not recovery). The anti-virus checks are performed on the Forest Recovery Console machine running Windows Server 2016 or higher by means of antivirus software installed on the machine. The best practice is to use the scheduled verification to have up-to-date backup scan results and to run anti-malware checks in the background because this process is time-consuming. To configure the verification schedule, refer Scheduling project verification.

Supported antivirus software

• Microsoft Defender

• FEATURE PREVIEW Symantec Endpoint Protection 14.x; Broadcom Endpoint Security (former name: Symantec Endpoint Protection 15)

Virus scanning general recommendations

• The scan performance highly depends on the network speed to the remote backup storage.

• It is not recommended to scan more than 5-10 BMR backups in parallel - this means that only 5-10 DCs should be configured to restore from the BMR backup. It is a risk to restore some DC from scanned BMR backup, and others from not scanned backups that can potentially contain malware.

• If you have remote sites with slow network connection, consider installing other instances of RMAD there, and configure backup metadata replication. For details, see Consolidating backup registration data.

• In some cases, depending on a host environment and the size of the backed-up data, the host machine can experience a high CPU load while scanning a backup. To avoid this, a user can limit CPU utilization in the antivirus software settings. For example, a user can change the ScanAvgCPULoadFactor setting if Windows Defender Antivirus is used. For details, see https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-antivirus/configure-advanced-scan-types-windows-defender-antivirus. You can use this formula to estimate a possible setting value: (number of parallel backups) * ScanAvgCPULoadFactor < (desired overall CPU usage by RMAD scan process).

• For all antivirus vendors, real-time protection mode can affect Active Directory backup scans.

Symantec Endpoint Protection limitations

• A parallel backup scan is not yet supported for Symantec Endpoint Protection. Therefore, the scan operation with Symantec may take longer than a scan using Windows Defender.

• Make sure that AD backup checks are not run together with any other file system scans on the Forest Recovery Console machine.

• For Symantec Endpoint Protection: If you cancel the project verification, the virus scan will continue running due to the Tamper Protection feature of Symantec Endpoint Protection (SEP). To resolve this problem, there are two workarounds:

  • Stop the current antivirus scan from Symantec Endpoint Protection Manager.
  • Disable the Tamper Protection feature. Then, end the ccSvcHst.exe process. This process is a common scanning process for the SEP client, so this action will drop all scanning tasks on the machine.

Features supported by different anti-virus scanners

* If Real-Time Protection is disabled, Active Directory backups can also be scanned.

How to enable virus scanning in Recovery Manager for Active Directory

Recovery Manager for Active Directory automatically detects antivirus software and you do not need to explicitly specify it in the configuration file (%ProgramFiles%\Quest\Recovery Manager for Active Directory\Management\AntivirusConfiguration.json). The AntivirusToUse parameter value is empty by default. If this parameter contains any value, the autodetect feature will not work. Recovery Manager for Active Directory detects only antivirus software specified in the "Antiviruses" section of the configuration file, using Prechecks. Make sure that all the PrecheckTarget parameter values are correct. If you have more than one antivirus software supported by RMAD in your environment, the autodetect feature will use the first found antivirus software for backup scans.

To enable scan for viruses

In Forest Recovery Console, select the Scan the selected backup (and Active Directory backup if applicable) for malware during the project verification option on the General tab.

The backup scan status is shown next to the backup in Recovery Manager for Active Directory Console and Forest Recovery Console. Also, Recovery Manager for Active Directory Console gives a better representation of scan results. Anti-virus check statuses:

• Passed - All antimalware checks have passed successfully.

• Passed with warnings - This status appears if antimalware checks have passed successfully but with minor issues.

• Infected - The backup is infected.

• Corrupted - This status appears when malware checks are not performed because the selected backup cannot be mounted or unpacked by RMAD.

• Check failed - This status is returned by the antimalware script and appears when malware checks cannot be performed, for example, if antimalware software is not installed, etc.

• Unknown - The backup has not been checked yet but the check operation is enabled on the General tab for this DC.

If you use the backup criteria to automatically select a backup

If you set the project to automatically select backups using the backup selection criteria, the following logic is applied:

Scheduling project verification

To automate running of the verify settings operation on a regular basis, you can schedule this operation for the recovery project.

To create a schedule for the verify settings operation

1. In Forest Recovery Console, create or open an existing recovery project.

2. Click Schedule Verify… on the tool bar.

3. In the Configure Schedule dialog box, click Modify….

4. In the dialog that appears, click New… and configure the schedule.

5. Then you will be able to see a list of configured schedules in the Configure Schedule dialog. The Enable schedule option is selected by default.

6. To specify a user account for the project verification, click Select account… in the Configure Schedule dialog. If you skip this step, you will be prompted for a user name and password when saving the schedule. You must use the Administrator user account.

7. Click OK to save the schedule.

To change the project schedule settings

1. In Forest Recovery Console, open an existing recovery project.

2. Click Schedule Verify… on the tool bar.

3. To enable or disable the schedule, use the Enable Schedule check box in the Configure Schedule dialog.

4. To change the schedule, click Modify…..

5. In the dialog box that opens, configure the new schedule and click OK.

6. To change the schedule account, click Select account… in the Configure Schedule dialog.

7. Enter new credentials, then you will be prompted for the account which is currently used for this schedule. Enter the current credential and click OK.

8. Click OK to save the changes in the Configure Schedule dialog. If you have not changed the account, you will be prompted for the current credentials.

To remove a schedule for the project:

1. In Forest Recovery Console, open an existing recovery project.

2. Click Schedule Verify… on the tool bar.

3. Click Modify….

4. Delete all schedules and click OK.

5. Click OK in the Configure Schedule dialog and you will be prompted for the current schedule account.

6. Enter the current credentials and click OK.

Specifying recovery settings for a DC

You can set individual recovery settings for each domain controller in your recovery project. For more information about these settings, see Domain controller recovery settings and progress.

To specify recovery settings for a domain controller

1. Create or open a recovery project.

2. In the list of domain controllers, select the domain controller for which you want to specify recovery settings.

3. Use the General tab to specify recovery settings.

Selecting backups for recovery

You can only restore domain controllers from backups created with Recovery Manager for Active Directory. The Forest Recovery Console provides the following methods for you to select backups for recovery:

• Method 1: Automatically select backups based on your criteria. Allows you to automatically select specific backups for multiple domain controllers according to the backup selection criteria you specify.

• Method 2: Manually select backups. Allows you to manually select any backup for a given domain controller in the recovery project. You can only select from backups created with Recovery Manager for Active Directory.

The next sections describe each of these methods.