This article describes the USB Bare Metal Restore (BMR) process for disaster recovery. The Bare Metal Restore utility is a tool to restore downed servers.
For best results, review the Datto Disaster Recovery Guide before you get started.
- Datto Bare Metal Restore
- The Bare Metal Restore feature is not intended to be used as a deployment tool. To deploy a new server instead of recovering a downed one, install the new server's operating system, and then use the Direct Restore Utility to migrate its data.
- Bare Metal Restore for ReFS is currently unsupported. Any ReFS volumes in the selected snapshot will be excluded from the restore. To perform a restore of an ReFS volume, use the Volume Restore feature.
- If you are performing a BMR from a VM on a Datto appliance, make sure that all volumes have been backed up successfully, and are restored to the production machine, before you remove the VM from the Datto appliance. Otherwise, you can lose data.
- A Bare Metal Restore will cause the target server to perform a full backup when the restore finishes. Depending on the speed of your network, you might need to order a RoundTrip to move this backup to the Datto Cloud.
- The Datto Utilities version of USB Bare Metal Restore is only available for Datto appliances running the Datto IRIS 3 (Ubuntu 16.04) OS. For Datto IRIS 2 (Ubuntu 12.04) appliances, or if you are attempting to recover a 32-bit system, image the USB drive with the Legacy BMR ISO environment, and follow the Legacy Bare Metal Restore process. You can see which version of Ubuntu your Datto device is running on the Advanced Device Status page.
Requirements for the target hardware:
- Datto recommends verifying that the target hardware is healthy, including checking the SMART values on hard drives to ensure healthy target disks.
- Must be able to boot from USB
- Must be on the same network as the Datto device
- Must be 64-bit hardware
- The hardware must be able to fully support the system image you are restoring to it
- Bare Metal Restore to EFI Linux agents is not supported. See the Installing the Datto Linux Agent article for more information.
- If you update a protected machine to Mac OS X to version 10.12.5 from an earlier version, you may need to force a new full backup of the agent for continued compatibility with the Bare Metal Restore process.
Due to their mobile nature, Datto does not endorse or support backing up laptops. Laptops must be inside the LAN, and not on a wireless network, to perform backups in a timely manner. Attempts to back up laptops are at your own discretion.
Because of this, and due to the wide range of touchpad drivers, custom drivers, and hardware configurations available for both laptops and all-in-one workstations, restoration support for these platforms is 'best-effort' only.
- Touchscreens may not work after a Bare Metal Restore until you manually reinstall their drivers.
Figure 1 illustrates the data flow for the Bare Metal Restore solution. See the SIRIS, ALTO and DNAS Networking & Bandwidth Requirements article for more information.
You should have the following items available when starting this process:
- USB stick that is at least 8 GB
- We will automatically detect storage controllers and inject them as needed. You may still want to collect any other drivers to apply after the imaging is complete.
- If your backups are encrypted, then you will need the encryption passphrase for the protected system that you are restoring.
Image the USB Drive
- Image a USB stick with the latest version of the Datto Utilities Image. For more information about this process, see Imaging a USB Drive with Datto Utilities.
- Once the imaging process completes successfully, unplug the USB stick, and proceed to the article USB Bare Metal Restore: Booting the target machine from USB.