SIRIS, ALTO, and NAS: Performing a volume restore



This article describes the process to mount and access a Volume Restore on Windows-based operating systems.


  • Datto SIRIS
  • Datto ALTO
  • Microsoft Windows 7 and above


The Volume Restore feature allows a device operator to share the contents of a selected recovery point over the LAN as an iSCSI target. All files and folders in the recovery point will restore with the ACL attributes they had when you took the snapshot. 

Use a volume restore if you do not need to virtualize or perform a Bare Metal Restore of a machine, but you would like to restore files with their NTFS permissions intact.

This process does not apply to externally-protected iSCSI shares. To restore a protected iSCSI share, follow the Restoring an External NAS Share process.


1. Access the Restore tab of your Datto appliance's GUI.

2. Select the backup set you'd like to restore, then select Volume Restore.

3. Select the desired recovery point. Then, click Start Restore.

4. You will see the configuration page.

5. Datto appliances can protect iSCSI shares with CHAP authentication. Adding CHAP authentication to the share helps protect its data against networking attacks by requiring endpoints to provide access credentials to each other. To activate this feature, check the Enable CHAP authentication box. Enter the following information:

  • CHAP Username: Create a username which endpoints will use to connect to the iSCSI share on the Datto appliance.
  • CHAP Secret: Create a password that endpoints will use to connect to the share.

To use two-way CHAP authentication, check the Use mutual CHAP authentication box. In the fields which populate, enter the following information:

  • Mutual CHAP Username: Enter a username that the Datto appliance can use to connect to the endpoint.
  • Mutual CHAP Secret: Enter the password that the Datto appliance can use to connect to the endpoint.
For Mutual CHAP authentication to work correctly, the CHAP secret and Mutual CHAP secret must not be the same.

6. When you finish configuring the share, click Generate Target to continue.

7. Your Datto appliance will share the contents of the selected recovery point over the network. Make a note of the Target address displayed in the Mounted Restore Options field (Figure 3).

8. Follow the steps in the Mounting an iSCSI Share in Windows article to attach the recovery point as a logical drive to your production machine.

9. When you have finished with your restore, unmount the share by using the Destroy Target button. 

Figure 1: Performing a volume restore (video)

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